Concentrated sulphuric acid is always dilute by adding

Options

(a) water to acid
(b) alcohol to acid
(c) acid to water
(d) distilled water to acid

Correct Answer:

acid to water

Explanation:

Concentrated sulphuric acid has strong affinity for water and a large amount of heat is produced on mixing the acid with water. the temperature may rise as high as 120⁰C. Therefore this acid is always diluted by adding the acid to water, slowly with constant stirring.