Question

How many moles of nitrogen are needed to completely convert 6.34 mol of hydrogen?

Answer 1

Answer:

n = 2.11 moles

Explanation:

As we know by the reaction of hydrogen and nitrogen

$N_2 + 3H_2 --> 2NH_3$

so here from above equation we know that for complete conversion of 3 moles of hydrogen we need 1 mole of nitrogen

so here we know that 6.34 moles of hydrogen is available

so we require 1/3 times of moles of nitrogen for complete reaction

so number of moles of hydrogen will be

$n = \frac{1}{3} \times 6.34$

$n = 2.11 moles$

so here we can say it requires 2.11 moles of nitrogen for complete reaction of 6.34 moles of hydrogen

Answer 2

If we use the equation:
N2 + 3H2 --> 2NH3
Then
1 mol of Nitrogen required 3 moles of Hydrogen
x mols : 6.34mols
X = 6.34/3
X = 2.11 moles of Nitrogen are required.