Question

If 2.22 moles of ammonia (NH3 ) decomposes according to the reaction shown, how many moles of hydrogen (H2 ) are formed? A. 1.11 moles of H2 B. 3.33 moles of H2 C. 6.66 moles of H2 D. 2.22 moles of H2

Answer 1

C. 3.33 moles

Explanation:

Ammonia decomposes

`2NH_3\rightarrow N_2+3H_2`

We have to find the moles of hydrogen formed in 2.22 moles of ammonia.

From the reaction

2 moles of ammonia gives 3 moles of hydrogen

1 mole of ammonia produce hydrogen=3/2 moles

2.22 moles of ammonia produces hydrogen=
`(3)/(2)* 2.22` moles

Number of moles of hydrogen formed by decomposition of 2.22 moles of ammonia

=
`(6.66)/(2)=3.33`moles

Hence, 3.33 moles of hydrogen are formed in 2.22 moles of ammonia.

Option C is true.

C. 3.33 moles