Question

Some substances and their pH values are given
in the table. Analyse the data in the table and

answer the following questions:


(a) Which of the substances are basic in nature?


(b) Which of the substances are acidic in nature?


(c) Which of the substances are neutral?

Answer 1

★Basic substances : with pH more than 7
★Acidic substances : with pH less than 7
★Neutral substances : equal to 7

(a) solution of baking soda and sodium hydroxide solution.
(b) lemon juice and vinegar
(c) water

Answer 2

a) Those substances that have pH > 7 are basic.
So here, solution of baking soda and sodium hydroxide solution solution have pH greater than 7,they are basic.

b) Those substances that have pH < 7 are acid.
So here, lemon juice and vinegar have pH less than 7,they are acidic

c) Those substances that have pH = 7 are neutral
Here water is neutral as it has pH equal to 7

Hope This Helps You!