Question

One molecule of N2 (9) is treated with H2 (g) at 773 K to form ammonia. The molecules of hydrogen used and ammonia formed respectively are -

Answer 1

Answer:

N

2

+3H

2

773K

2NH

3

Nitrogen and hydrogen gases combine under specific conditions to form ammonia. This is an

example of a combination reaction. It is also known as a synthesis reaction.

This reaction is used for industrial production of ammonia by the Haber process.

Answer 2

Three molecules of hydrogen are used and two molecules of ammonia are formed.

• Nitrogen reacts with hydrogen to form ammonia. This process is called Haber's process.
• The reaction is-
• $N_2+3H_2\rightarrow 2NH_3$
• Here one molecule of nitrogen reacts with three molecules of hydrogen at 773K temperature to form two molecules of ammonia.
• So, one molecule of nitrogen and three molecules of hydrogen is used and two molecules of ammonia are formed.