this experiment was to synthesize tetraphenylcyclopentadienone by reacting dibenzyl ketone with benzil in the presence of a base. The reaction proceeded via an aldol condensation reaction with dehydration, and then the product crystals were isolated by vacuum filtrations using a Buchner funnel. Experiment Scheme Equation 1. Aldol condensation reaction between benzil and dibenzyl ketone in the presence of a base To begin the experiment 1.5g of benzil, 12mL absolute ethanol and 1.5g of
Words: 710 - Pages: 3
chemicals together * -> Yields (Products) * (arrow forward and backward) reaction in both directions (denotes equilibrium) * (arrow up) gas evolved * (arrow down) solid precipitate forms * (s), (l), (g) solid, liquid, gas * (aq) aqueous solution * (Triangle) heating the solution * Limiting reagent – the reagent that is completely consumed in a reaction * Reagent that limits the amount of product possible * Theoretical
Words: 1207 - Pages: 5
Long-wavelength TLC plate: solvent line = 3.9cm filtrate: same values appear as under short-wavelength in addition to 1.1cm/3.9cm = 0.28 trans,trans-isomer: same value as under short-wavelength Discussion: This experiment was governed by the the Wittig reaction mechanism, which is done properly yields an alkene. The percent yield for the overall experimented, after purification was approximately 4.23%, not a very high yield but enough to carry out subsequent procedures to check for the validity of the product
Words: 946 - Pages: 4
Ch. 15: Kinetics 15.1 15.2 15.3 15.4 15.5 15.6 15.7 15.8 15.9 Week 15 Reaction Rates Rate Laws Forms of Rate Laws Integrated Rate Law Rate Laws: A Summary Reaction Mechanisms Steady-State Approximation A Model for Chemical Kinetics Catalysis CHEM 1310 - Sections L and M 1 Reaction Rates: Example Recap: Avg. Reaction rate = +∆[Product]/∆t Avg. Reaction rate = -∆[Reactant]/∆t Butane, C4 H 10, burns in oxygen to give CO2 and H2 O vapor. If the butane concentration
Words: 954 - Pages: 4
C1 combustion questions Q1. Choose words from this list to complete the sentences below. a chemical an electrical a physical hydrogen nitrogen oxygen (a) Burning is chemical change. (1) (b) When substances burn, they are reacting with oxygen from the air. (1) (Total 2 marks) Q2. Wax is a fuel. A young child watched a candle burning and wondered where the wax had gone. (a) Complete the
Words: 609 - Pages: 3
7 • Exercise 100 in Ch. 8 Submit the assignment, as directed by your facilitator. Friday 5 Individual Virtual ChemLab Assignment 2-4 Access and view the Virtual ChemLab Tutorial, located on the student website. Complete 2-4: Precipitation Reactions from Virtual ChemLab: General Chemistry Laboratories, located on the student website. Note. To complete the assignment, the Virtual ChemLab software must be installed on your computer and must be used in conjunction with Virtual ChemLab: General
Words: 1174 - Pages: 5
(8 points) |Score | | | 1. Part 2: Single-Displacement Reactions: For each four single-displacement reaction, describe what happened in each well. If a chemical reaction occurred, write a balanced equation for it. Then use the A, B symbols to write a general equation for a single-displacement reaction. Here are the chemical formulas of the reactants for each reaction: • zinc – Zn copper sulfate – CuSO4 • aluminum – Al copper sulfate
Words: 278 - Pages: 2
Enzymes are proteins that speed up the rate of reactions that would otherwise happen more slowly. The enzyme is not altered by the reaction. You have hundreds of different enzymes in each of your cells. Each of these enzymes is responsible for one particular reaction that occurs in the cell. In this lab, you will study an enzyme that is found in the cells of many living tissues. The name of the enzyme is catalase (KAT-uh-LAYSS); it speeds up a reaction which breaks down hydrogen peroxide, a toxic
Words: 1103 - Pages: 5
BLUE PRINT - CHEMISTRY - Higher Secondary – Second Year Time : 3 Hours Maximum Marks : 150 S.No 1. 2. 3. 4. 5. 6. OBJECTIVES Atomic Structure Periodic Classification p-Block elements d-Block elements f-Block elements Co-ordination and Bio-coordination compounds - KNOWLEDGE E/LA SA VSA 1(3) UNDERSTANDING O E / L A SA VSA 1(1) 1(5) 1(3) 1(3) 1(1) - APPLICATION SKILL O E/LA SA VSA O TOTAL 10 09 O E/LA SA VSA 1(5) 1(3) - 1(1) - - 1(5) - - 1(5) 1(5) 1(5)
Words: 1341 - Pages: 6
the rate of reaction between sodium thiosulfate (Na2S2O3) and dilute hydrochloric acid (HCl). The formula for this reaction is: Na2S2O3 (aq) + 2HCl (aq) 2NaCl (aq) + S(s) + SO2 (g) + H2O (l). This makes the products Sodium Chloride, Sulphur Dioxide, Sulphur and water Rate of reaction is the speed at which a chemical reaction takes place. Some reaction can take less than a second and other can take over millions of years. During a reaction, we can measure the rate of reaction. The rate of
Words: 1504 - Pages: 7
