Question

In an experiment, 2 g of nitrogen gas reacts with 6 g of hydrogen to form 8 g of ammonia. When 2 g of nitrogen reacts with 12 g of hydrogen, what mass of ammonia will be produced?

• A. 14 gm
• B. 10 gm
• C. 8 gm
• D. 7 gm

Answer 1

The correct option is C

8 gm

According to the law of constant proportions:

Nitrogen and hydrogen combine in the fixed proportion of 2:6 by mass to produce 8 g of ammonia, therefore in second case also, 2 g of nitrogen will combine with 6 g of hydrogen (2:6 mass ratio) and not 12 g. Hence, same mass of ammonia will be produced.