TAGAÑA, Kurt Lance C.
CORDOVA, Chedric Joshua L.
CONCEPCION, Ludwig Michael T.
9-St. Titus
March 2014
ACKNOWLEDGEMENT The researchers of this study would like to thank Mrs. Gay Fan for sharing her advices and ideas about chemistry. Truly, without her help, this study wouldn’t be made. They would also want to acknowledge the help of Mrs. Aurora Ramos by letting them borrow a pH wheel with pH papers in it. Last, but not the least, they would want to thank Mrs. Shellah Marie Cruz for her efforts in checking, criticizing, and helping the researchers for the good of their study.
TABLE OF CONTENTS Abstract 3 Chapter I: Introduction 4 Chapter II: Review of Related Literature 7 Chapter III: Methodology 9 Chapter IV: Presentation, Analysis and Interpretation 11 Chapter V: Generalization 12 Chapter VI: Recommendation 13 Bibliography 14
ABSTRACT
The study aims to provide chemists a source of an accurate acid-base/ pH indicator which is abundant and can be found anywhere in order to help them in certain laboratory situations such as identifying whether a solution is an acid or base. Red onion extract was the substance tested.
The experiment was done by first determining whether the solutions muriatic acid, bleach and red onion extract are acidic, basic or neutral by dropping a substance of each solution in a pH paper. The pH paper turned purple red for muriatic acid (pH level of 1 according to the pH wheel), olive green for bleach (pH level of 9) and yellow for red onion extract
