Chapter 4, Problem 102E

Consider the reaction.

$2NO(g)+5H_2(g)\to 2N{H}_3(g)+2H_{2}O(g)$

A reaction mixture initially contains 5 moles of NO and 10 moles of $H_2$ . Without doing any calculations, determine which of the following best represents the mixture after the reactants have reacted as completely as possible. Explain your reasoning.
a. 1 mol NO, 0 mol $H_2$ , 4 mol $N{H}_3$ , 4 mol $H_{2}O$

b. 0 mol NO, 1 mol $H_2$ , 5 mol $N{H}_3$ , 5 mol $H_{2}O$

c. 3 mol NO, 5 mol $H_2$ , 2 mol $N{H}_3$ , 2 mol $H_{2}O$

d. 0 mol NO, 0 mol $H_2$ , 4 mol $N{H}_3$ , 4 mol $H_{2}O$