Question

The reaction of hydrogen with nitrogen to produce ammonia is shown below.If there are 12 moles of hydrogen, how many moles of nitrogen are needed toreact completely with the hydrogen?N2(9) + 3H2(9) ► 2NH3(9)O A. 3B. 6C. 4.O D. 36

Answer 1

C. 4

Step-by-step explanation

Given:

`N_(2(g))+\text{ 3H}_(2(g))\rightarrow2NH_(3(g))`

Moles of hydrogen = 12 moles

Required: Moles of nitrogen

Solution

Use the stoichiometry to find the moles of nitrogen

The molar ratio between hydrogen and nitrogen is 3:1

Therefore the moles of N2 = 12 moles x (1/3) = 4 moles