Question

Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7.

Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide.

Answer 1

Substances	pH Value
Common salt	equal to 7
Sodium acetate	greater than 7
Hydrochloric acid	less than 7
Carbon dioxide	less than 7
Potassium bromide	equal to 7
Calcium hydroxide	greater than 7
Ammonium chloride	less than 7
Vinegar	less than 7
Sodium carbonate	greater than 7
Ammonia	greater than 7
Sulphur dioxide	less than 7