Question

Rohan found out that the ratio of nitrogen to hydrogen particles in a sample of ammonia from his lab was 14:3 by mass. Next day he collected an ammonia sample from a different lab. Which of the following will be the mass ratio of nitrogen to hydrogen in this sample?

• A. 3:14
• B. 3:1
• C. 1:3
• D. 14:3

Answer 1

The correct option is D 14:3

According to the law of constant proportions, a compound is made up of elements in a definite proportion by mass. Also, this proportion does not depend on the source of the compound.

Hence, a sample of ammonia $\left(N{H}_3\right)$ collected from any source will have the ratio of nitrogen to hydrogen particles as 14:3 by mass.