Question

The pH values of certain familiar substances are given below

Substance	pH value
Blood	7.4
Baking soda	8.2
Vinegar	2.5
Household ammonia	12

Analyse the data in the table and answer the following questions
a) Which substances are acidic in nature?
b) Which substances are basic in nature?

Answer 1

Acid is having the pH less than 7 and more than 7 is basic.

a) Vinegar, because pH is 2.5 which is less than 7.
b) Household ammonia is basic having pH 12.
Baking soda is basic (pH is 8.2)
Blood is slightly basic (pH is 7.4)