Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements:

2NaN3 (s) → 2Na (s) + 3N2 (g)

How many moles of N2 are produced by the decomposition of 1.25 mol of sodium azide?

a) 4.32

b) 8.64

c) 1 ... e2

d) 1.44

e) 0.960

1.875 moles of N₂ produced from 1.25 moles of sodium azide.

Explanation:

Given dа ta:

moles of sodium azide = 1.25 mol

moles of N₂ produced = ?

Balance chemical equation:

2NaN₃ (s) → 2Na (s) + 3N₂ (g)

Now we compare the moles of sodium azide and N₂ from balance chemical equation,

NaN₃ : N₂

2 : 3

1.25 : 3/2*1.25 = 1.875

1.875 moles of N₂ produced from 1.25 moles of sodium azide.