Question

The amounts of water can be detected by the increase in the mass of __________ during quantitative analysis of hydrogen.

(a) potassium hydroxide

(b) sodium hydroxide

(c) sodium chloride

(d) calcium chloride

The question was posed to me at a job interview.

The query is from Organic Chemistry in chapter Organic Chemistry – Basic Principles and Technique of Chemistry – Class 11

Answer 1

The correct option is (d) calcium chloride

For explanation: In the quantitative analysis of hydrogen, hydrogen is converted to water. Then, water is passed through a u-tube containing calcium chloride. Calcium chloride absorbs water and thereby, increases in mass. This increase in the mass of calcium chloride gives the amounts of water present in the organic compound.