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
i) Which substances are acidic in nature?
ii) Which substances are basic in nature?

Answer 1

Acidic substances have $pH<7$.

Basic substances have $pH>7$.
Hence,

Acidic $\to$ Vinegar

Basic $\to$ Blood, Baking soda, and household ammonia