CBSE Class 10 Science (Chemistry) Practical Skills- pH of Samples
pH of Samples The nature of the chemicals used in laboratories is either basic, acidic or neutral. This characteristic depends on the ions they release. A chemical is said to be acidic if it releases H+ ions in its aqueous solutions. A chemical is said to be basic if it releases OH– ions in its aqueous solutions. In this experiment, we will learn how to find the pH of acids and bases. Table of Contents * Aim * Materials required * Theory * Procedure * Observation * Result and Conclusion * Precautions to be taken during the experiment * Viva Voce Aim: To determine the pH of the given samples using pH paper or universal indicator. The samples whose pH has to be determined are- (1) Dilute CH3COOH (2) Dilute NaOH (3) Salt NaCl (4) Dilute NaHCO3 (5) Water (6) Lemon juice Materials required: (1) Six test tubes (2)Test tube stand (3) Dilute acid CH3COOH (4) Dilute base NaOH (5) Salt NaCl ( preparation: dissolve 1 gram salt in 10 mL distilled water) (6) Water (7) Lemon juice (...