Premium Essay

0.5 Naoh Reaction Lab

Submitted By
Words 991
Pages 4
EXPERIMENTAL
For Part A of the experiment, 50 mL of 0.05 M acetic acid solution was prepared with the use of the 0.5M acetic acid the stock solution. To star, 45 mL of deionized water were poured into a 150 mL beaker that was labelled “0.05 M acetic acid.” A 10 mL graduated cylinder was used to add 5 mL of 0.5 M acetic acid to the beaker, and the solution was stirred with a glass stirring rod, which was clean each time after use to . Then, a 100 mL of 0.5 M NaOH solution were prepared with the help of a 50 mL graduated cylinder to add 90 mL deionized water to a 250 mL beaker labelled “0.05 M NaOH.” A 10 mL graduated cylinder was used to add 10 mL of 0.5 M NaOH to the beaker, and the solution was stirred. After, the LabQuest and pH probe were prepared for data …show more content…
“Sensors” and “Events with Entry” were selected after the pH probe was plugged into Channel 1. After that, in the Name box, “Volume” was typed into the designated box, and the corresponding units, “mL,” were also added. All changes made were saved. To proceed, the burette was “conditioned” after it was secured the ring stand, and the stopcock was closed in order to add 10 mL of deionized water to clean and rinse the inside of the burette. This procedure was done twice with water, and another two times with the prepared NaOH solution. A plastic funnel was used each time to pour any given liquid into the burette, and after, before recording the volume, the funnel was removed. Then, the burette was filled with the NaOH solution previously prepared without surpassing the 0 mL mark, the volume was recorded to the nearest 0.05 mL. After that, 50 mL of deionized water and stir bar were then added to a 250 mL beaker. A 10 mL volumetric pipette was used to add 10 mL of acetic acid to the beaker, before placing the beaker on a stir plate to stir

Similar Documents

Free Essay

Its Me

...THERMOCHEMISTRY OF NaOH AND HCl LAB Overview Teacher’s Instruction: Find the Molar Heat of Reaction for the NaOH reaction. Then, predict and calculate the change in enthalpy (ΔE) and change in heat (ΔH) when 5.00g NaOH reacts completely with HCl. Reaction Equation: NaOH(s) + HCl(aq) -> NaCl(aq) + H2O(liq) Net Ionic Equation: Na(OH)(s) + H+(aq) -> H2O(liq) + Na+(aq) The Big Question: If we combine solid NaOH and aqueous HCl, how will the temperature change? What will the change be with, specifically, 5.00g of NaOH? Scientific Background and Principle: WELL, I’ll have you know that we got our hands on a fancy-schmancy Lab Quest 2 with a temperature probe. Now this device allows us to accurately record the temperature of a given entity over a period of time; as such, by having the Lab Quest record the temperature of the system, we were able to gather the total temperature change for the reaction. In theory, the temperature should increase by 53.10o Variables * Independent Variable: Amount of NaOH * We had a theoretical value for temperature that was dependent on the amount of NaOH used; as such, we set our amount at a certain point to achieve that temperature. * Dependent Variable: Heat of Reaction (Temperature) * We measured the temperature of the reaction throughout its duration, which would have varied in intensity and duration based on the amount of NaOH we used * Controlled Variables * Light-- by enclosing the reaction in darkness, we...

Words: 1848 - Pages: 8

Free Essay

Copper Cycle

...Copper Cycle The copper cycle involves many different type of reactions. In this lab you will investigate the various types of reactions that are used to complete the cycle. Solid copper will be added at the beginning of the reactions. Due to the law of conservation of matter the amount of copper put into the reaction should also come out of the reaction at the end. The reactions that you will perform are generally outlined in the following cycle: Reactions: 1. 8HNO3 (aq) + 3Cu (s) + O2 (g)  3Cu(NO3)2 (aq) + 4H2O (l) + 2NO2 (g) 2. Cu(NO3)2 (aq) + 2NaOH (aq)  3. Cu(OH)2  4. CuO (s) + H2SO4 (aq)  5. CuSO4 (aq) + Zn (s)  Materials: 250 mL beaker Aspirator H2O Glass funnel Rubber tubing 15 mL - 6.0 M Sulfuric Acid Ring stand Bunsen burner 2.0 g Zinc powder Ring  0.5 g copper wire 10 mL - 6 M Hydrochloric Acid Wire Gauze 4.0 mL - 16 M Nitric Acid Finger clamp 30 mL - 3.0 M NaOH Set-Up: 1. Create a fume hood from a funnel surgical tubing and aspirator. 2. Support the 250 mL beaker with a ring and wire gauze. 3. Connect the funnel with a finger clamp over the 250 mL beaker. 4. Connect hose to funnel and aspirator (fume hood maybe used in lieu of funnel and aspirator set-up). Procedures: 1. Mass a 250 ml beaker and record in the data table. 2. Mass out approximately 0.500 grams of no. 16 copper wire and record the mass of the copper in the data table and place...

Words: 681 - Pages: 3

Premium Essay

Organic Chem 2020 Lab

...Melissa Ramessar 212762654 Organic Chem 2020 Lab 4 1.) Variation of [OH] Experiment [tBuCl] (M) [OH] (M) Reaction time (s) Rate Constant k (s-1) Reaction rate (M/s) 1 0.03 0.003 27 3.903×10-3 1.171×10-4 2 0.03 0.006 91 2.453×10-3 7.358×10-5 3 0.03 0.009 135 2.643×10-3 7.928×10-5 According to the experiments, the rate law does not depend on [OH]. When increasing the [OH] in experiment 2, the rate of reaction was lowered tremendously; however that could be due to other reason such as errors rather than the rate law depending on [OH]. These results are predicted for a reaction being a zero order reaction. Using the equation below, it is confirmed that the reactions are zero order. (experiment1/experiment2)=(k1[tBuCl]^A [OH]^B)/(k2[tBuCl]^A [OH]^B ) ((1.171×10^-4)/(7.358×10^-5))=(〖3.903×10^-3 [0.03]〗^A [0.03]^B)/(2.453×10^-3 [0.03]^A [0.06]^B ) 1.591 = 1.591 (0.5) B...

Words: 1002 - Pages: 5

Free Essay

Fractional Distillation

...Lab report for Experiment #2: Extraction Your Name: Name of TA: Lab Partner’s Name: Lab Section: Title: Experiment #2: Extraction Purpose: What is the purpose of this lab? In your OWN words! Observations: Weighed out 3.2568 grams of chemical mixture that was yellow in color. Dissolved dry chemicals in 38 ml CH2Cl2 with gentle heating. Poured the yellow solution into sep funnel. Added 10 ml CH2Cl2 to flask to rinse, poured solution into sep funnel. Added 15 ml 3 M HCl, gently mixed and vented (saw bubbles during mixing, heard the evolution of gas while venting). Allowed layers to separate. Upper layer determined to be aqueous by density: lower layer removed. Upper layer placed into separate flask labeled “A” for acid extract. Lower layer placed into sep. funnel and reextracted with 15 ml 3 M HCl. Combined aqueous layers in flask A Reextracted CH2Cl2 layer containg chemicals with 15 ml 3 M NaOH. Upper layer in flask labeled “B” for base extract. Re-extract organic layer with 15 ml 3M NaOH. Combined base extracted materials in flask “B”. Saw bubbles during mixing, heard the evolution of gas while venting. Dried organic layer with anhyd. Na2SO4 until free flowing salt was observed (about 3 grams). Filtered the organic solution into a tared 100 ml round-bottom flask. Rinsed flask and funnel with 10 ml of CH2Cl2 and rotovaped off remaining solvent and weighed flask. The biphenyl obtained was white in color and was like a powder. Weight of flask and biphenyl...

Words: 901 - Pages: 4

Free Essay

Experiment 12: Determination of the Enthalpy (Heat) of Reaction of a Monobasic Acid with Sodium Hydroxide

...Experiment: Determination of The Enthalpy (Heat) of Reaction of A Monobasic Acid with Sodium Hydroxide No. of Experiment: 12 Date of Experiment: 2/2/2016 Date of Submission: 24/2/2016 Group members: 1)Chong Chi Wei 2)Mong Lai Wan 3)Ang Yen Yuan Name of Lecture: Dr. Sim Yoke Leng Title: Determination of the Enthalpy (Heat) of Reaction of A Monobasic Acid with Sodium Hydroxide Objective: 1. To understand the enthalpy chemistry. 2. To determine the calorimeter constant. 3.To determine the enthalpy of reaction of acid-base reactions. Introduction: Heat is associated with nearly all chemical reactions. In such instances, the reaction either liberates heat (exothermic) or absorbs heat (endothermic). When a reaction is carried out under constant pressure (as in an open beaker) the heat associated with the reaction is known as enthalpy. The symbol for enthalpy is ΔH. It is most often too difficult to direct measure the enthalpy change for a reaction. What can be done is to measure the heat changes that occur in the surrounding by monitoring temperature changes. Conducting a reaction between two substances in aqueous solution, allows the enthalpy of the reaction to be indirectly calculated with the following equation. q=m x c x Δ t The term q represents the heat energy that is gained or lost. C is the specific heat of water, m is the mass of the water and Δ t is the temperature change of the reaction mixture. The specific heat and mass of water will...

Words: 2694 - Pages: 11

Premium Essay

Chem Exam

...carried out on separate samples of the unknown solution. The difficulty with this way of doing qualitative analysis is that frequently, particularly in complex mixtures, one species may interfere with the analytical test for another. Although interferences are common, there are many ions which can be identified in mixtures by simple spot tests. In this experiment we will use spot tests for the analysis of a mixture which may contain the following commonly encountered ions in solution: CO32– SO42– PO43– SCN Cl – – carbonate sulfate phosphate thiocyanate chloride acetate ammonium C2H3O2– NH4+ 78 Chemistry 1B Experiment 16 The procedures we involve simple acid-base, precipitation, complex ion formation or oxidation-reduction reactions. You will carry out each test three times. First, you will test 1 M solutions of each ion, so you can easily observe the expected results. Then you will test 0.1 M solutions of each ion, which will require more careful observation. Finally, you will test an unknown solution, which will be a dilute mixture of 3 or 4 of the ions. SAFETY PRECAUTIONS: Wear your SAFETY GOGGLES. If you...

Words: 4527 - Pages: 19

Premium Essay

Career in Electronics Engineering

...ANGELICA A. KANG BS EcE I-1 ACTIVITY 9 Mixture – is a combination of two substances in such a way that no chemical reaction occurs between the components and you can separate them again. A mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. The substances in a mixture can be separated using physical methods such as filtration, freezing, and distillation. Examples of Mixtures sand and water salt and water sugar and salt ------------------------------------------------- Elements are chemically the simplest substances and hence cannot be broken down using chemical methods. Elements can only be changed into other elements using nuclear methods. An element is a type of matter composed of atoms that all have exactly the same positive charge on their nuclei. In other words, all atoms of an element have the same ------------------------------------------------- Examples of Elements ------------------------------------------------- aluminum, selenium, zinc, magnesium, carbon, mercury, gold, arsenic, lead and sodium. ------------------------------------------------- Compound is a chemical species that is formed when two or more atoms join together chemically, with covalent or ionic bonds. A compound is a substance formed when two or more chemical elements are chemically bonded together. Chemical compounds can be broadly classified into two categories, namely, organic compounds and inorganic...

Words: 2150 - Pages: 9

Premium Essay

Nt1310 Unit 1 Lab Report

...conjunction with immersion oil. 2.4.2 Gram reaction 2.4.2.1 Gram stain All the bacterial strains were stained using Hucker’s gram staining method (Hucker and Conn, 1923). The stained slides were viewed at 100x magnification using a BX-40 light microscope inconjunction with immersion oil. Strains that were stained purple were deemed as gram-positive and those stained pink were deemed as gram-negative. 2.5 GROWTH CHARACTERISTICS 2.5.1 Temperature optimization Temperature optimization was performed on metal-reducing anaerobes. Optimum growth temperature was determined by inoculating 0.5mL of fresh culture into 9mL of GAB medium and then growing them at different temperatures of 20oC, 40oC and 70oC. The cultures were grown for 24 hours and relative growth was determined by measuring cell density. The temperature at which maximum growth was observed was determined as optimal...

Words: 3778 - Pages: 16

Premium Essay

Mtech Thesis

...applications in industry. The ink used earlier for printing purposes contributes to pollution in environment. The pollution is by means of emission of volatile organic compounds (VOCs) which are present in the form of an aliphatic solvent. Emission of VOCs from these solvents and their discharge in waste streams are quantifiable. For example a typical medium size cold – set web plant uses 40,000 kg per year of the ink of which 6000 kg is lost as emissions. The plant uses over 10,000 kg per year of cleaning solutions all of which is lost in atmosphere. A typical newspaper uses 100,000 kg per year of ink and emits over 8000 kg of volatile solvents (Maji, 2003). VOC when released into the atmosphere participates in the atmospheric photochemical reactions. Ozone is produced at the ground level when oxides of nitrogen and VOCs react in the presence of sunlight. This is a major component of urban smog, which at elevated levels causes a potential hazard to humans, plants and animals. To overcome the problems of emissions due to solvent-based inks and cleaning of presses, a new type of ink based on vegetable oil has been developed which is biodegradable and environment-friendly. It does not contain aliphatic solvents, and hence its use produces virtually no emissions during printing. Also, this ink contains vegetable oil (castor-oil)-based alkyd resins, which are biodegradable and generate no waste-water threat of a secondary pollution during washing of presses. The main components of an ink...

Words: 2788 - Pages: 12

Free Essay

Hsc Chemistry Notes

...population. Chemists and chemical engineers continue to play a pivotal role in the search for new sources of traditional materials such as those from the petrochemical industry. As the fossil organic reserves dwindle, new sources of the organic chemicals presently used have to be found. In addition, chemists are continually searching for compounds to be used in the design and production of new materials to replace those that have been deemed no longer satisfactory for needs. This module increases students’ understanding of the implications of chemistry for society and the environment and the current issues, research and developments in chemistry. 1.1 Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Acid reactions: o acid (aq) + base (aq)  salt (aq) + water (l) o acid (aq) + active metal (s)  salt (aq) + hydrogen (g) o acid (aq) + metal carbonate (s)  salt (aq) + water (l) + carbon dioxide (g) • Cracking of long chain alkanes (e.g. decane) to give a shorter chain alkene & alkane o Thermal cracking (heated with steam in absence of O2 to 750-900°C) Initiation: C10H22  2C5H11· Propagation: C5H11·  C3H7· + C2H4 Termination: 2C3H7·  C6H14 o Catalytic cracking zeolite (heated in absence of O2 to 500°C)...

Words: 34562 - Pages: 139

Free Essay

Analytical Chem

...Chemistry Modern Analytical Chemistry David Harvey DePauw University Boston Burr Ridge, IL Dubuque, IA Madison, WI New York San Francisco St. Louis Bangkok Bogotá Caracas Lisbon London Madrid Mexico City Milan New Delhi Seoul Singapore Sydney Taipei Toronto McGraw-Hill Higher Education A Division of The McGraw-Hill Companies MODERN ANALYTICAL CHEMISTRY Copyright © 2000 by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the publisher. This book is printed on acid-free paper. 1 2 3 4 5 6 7 8 9 0 KGP/KGP 0 9 8 7 6 5 4 3 2 1 0 ISBN 0–07–237547–7 Vice president and editorial director: Kevin T. Kane Publisher: James M. Smith Sponsoring editor: Kent A. Peterson Editorial assistant: Jennifer L. Bensink Developmental editor: Shirley R. Oberbroeckling Senior marketing manager: Martin J. Lange Senior project manager: Jayne Klein Production supervisor: Laura Fuller Coordinator of freelance design: Michelle D. Whitaker Senior photo research coordinator: Lori Hancock Senior supplement coordinator: Audrey A. Reiter Compositor: Shepherd, Inc. Typeface: 10/12 Minion Printer: Quebecor Printing Book Group/Kingsport Freelance cover/interior designer: Elise Lansdon Cover image: © George Diebold/The...

Words: 88362 - Pages: 354

Premium Essay

Hello from the Other Side

... Name______________________________________________ IB Guide to Writing Lab Reports Standard and Higher Level Chemistry 2010-2011 Table of Contents page 1 Explanations, Clarifications, and Handy Hints page 2 - 13 IB Laboratory Evaluation Rubric page 14 - 15 Formal Lab Report Format page 16 Error Analysis Types of Experimental Errors page 17 Error Analysis: Some Key Ideas page 18 Precision and Accuracy in Measurements A Tale of Four Cylinders Assessment of Errors and Uncertainties in IB Lab Reports Explaining Terms and Concepts in Error Analysis page 19 - 20 page 21 Mathematics of Evaluating Accuracy and Precision page 26 - 27 Rejection of Data page 28 More Examples of Propagating Error page 29 - 31 page 22 - 25 Typical Instrumental Uncertainties page 32 Checklist for Writing IB Lab Reports page 33 - 34 Please read carefully and keep this handy reference for future use in writing exemplary lab reports. Page 1 IB Guide to Writing Laboratory Reports Explanations, Clarifications, and Handy Hints The nature of science is to investigate the world around you. An inquiring mind is essential to science. Experiments are designed by curious minds to gain insight into wonder-producing phenomena. Hopefully, this process of designing experiments, doing experiments, thinking about experimental results, and writing lab reports will tremendously benefit YOU! IB Chemistry is the challenge you have...

Words: 11919 - Pages: 48

Premium Essay

How to do well in biology

...UTAR FHSC1214 Fundamentals of Cell Biology Trimester 1 How YOU can do well in BIOLOGY Follow the 4A’s and you can expect A’s. A ttitude • Attend ALL lectures, tutorials and practicals on time without fail. • Be attentive in class and revise your notes after class while the topic is still fresh in your mind. Why waste time re-reading 2-3 months later? • Do your assignments faithfully as they carry marks for the finals. • Come prepared for lessons (i.e. read up beforehand). • Read up beforehand before attending lectures so that you won’t be lost and wasted hours of your life week after week. • Why stress yourself out if you can avoid it? Do NOT count on last minute revision for tests and examinations, as it will be too late to catch up and seek help in areas where you may find confusing or unclear of. • Why panic before exams because you can’t find this or that? Keep separate files for lecture, tutorial and practical. File up the respective notes systematically so that you do not lose them along the semester. • Do you expect the lecturer/ tutor to be available all the time to answer your questions? It is YOUR responsibility to take the initiative to clear your doubts or satisfy your curiosity to understand certain scientific phenomena by reading up on the relevant topics. A Based on a true story… A professor at the National University of Singapore recounts how on one occasion a student consulted him days before the exam. Student:...

Words: 20923 - Pages: 84

Premium Essay

Pokemon

...Studies VII Practical 9 Cell Biology Studies IX Practical 10 Cell Biology Studies X - Experiment Description Page Writing of Lab Reports Identification of Biomolecules 5 13 Identification of Unknown Carbohydrate Solutions and Investigation of Action of Saliva and HCl in Carbohydrate Solution at Two Different Temperatures Investigation of the Effects of Catalase Concentration on Hydrogen Peroxide Decomposition 20 Synthesis of Starch Using an Enzyme Extracted from Potato Tuber Investigation of the Effects of Different Catalytic Conditions on Hydrogen Peroxide Decomposition Microscopy 27 Practical 6 Cell studies II Practical 7 Cell studies III Extraction of Cell Organelles by Cell Fractionation Determination of Solute Potential of Potato Cell Sap 47 Practical 8 Cell studies IV Effects of Different Treatments on Stained Potato Cells 64 Practical 9 Energetics I Respiration of Germinating Beans 67 Microscopic Examination of Cells at Various Stages of Plant Mitosis and Meiosis DNA, Mitosis and Meiosis Modelling 71 Respiration of Yeast 93 Practical 3 Enzyme studies I (Experiment 1) Optional: Practical 3 Enzyme studies I (Experiment 2) Practical 4 Enzyme studies II Practical 5 Cell studies I - - Practical 10 Energetics II Lab manual version 6_201505 FHSB1214 Biology I & FHSC1214 Fundamentals of Cell...

Words: 22060 - Pages: 89

Premium Essay

Identification of Unknown Carbohydrate Solution and Investigation of Action of Saliva and Hydrochloric Acid in Carbohydrate Solution at Two Different Temperatures

...Studies VII Practical 9 Cell Biology Studies IX Practical 10 Cell Biology Studies X - Experiment Description Page Writing of Lab Reports Identification of Biomolecules 5 13 Identification of Unknown Carbohydrate Solutions and Investigation of Action of Saliva and HCl in Carbohydrate Solution at Two Different Temperatures Investigation of the Effects of Catalase Concentration on Hydrogen Peroxide Decomposition 20 Synthesis of Starch Using an Enzyme Extracted from Potato Tuber Investigation of the Effects of Different Catalytic Conditions on Hydrogen Peroxide Decomposition Microscopy 27 Practical 6 Cell studies II Practical 7 Cell studies III Extraction of Cell Organelles by Cell Fractionation Determination of Solute Potential of Potato Cell Sap 47 Practical 8 Cell studies IV Effects of Different Treatments on Stained Potato Cells 64 Practical 9 Energetics I Respiration of Germinating Beans 67 Microscopic Examination of Cells at Various Stages of Plant Mitosis and Meiosis DNA, Mitosis and Meiosis Modelling 71 Respiration of Yeast 93 Practical 3 Enzyme studies I (Experiment 1) Optional: Practical 3 Enzyme studies I (Experiment 2) Practical 4 Enzyme studies II Practical 5 Cell studies I - - Practical 10 Energetics II Lab manual version 6_201505 FHSB1214 Biology I & FHSC1214 Fundamentals of Cell...

Words: 22060 - Pages: 89