Automobile air bags are inflated with nitrogen gas, which is formed by the decomposition of solid sodium azide (nan3). the other product is sodium metal. calculate the volume of nitrogen gas at 27 °c and 756 torr formed by the decomposition of 125 g of sodium azide.

71.65 L

Explanation:

Decomposition of sodium azide is shown by equation below:

According to stoichiometry:

2 moles of produce 3 moles of

Thus 1.92 moles of will produce= moles of

According to the ideal gas equation:

P = Pressure of the gas = 756 torr = 0.99 atm    (1 torr= 0.0013 atm)

V= Volume of the gas = ?

T= Temperature of the gas = 27°C = 300 K       (0°C = 273 K)

R= Gas constant = 0.0821 atmL/K mol

n=  moles of gas= 2.88  

Thus the volume of nitrogen gas at 27 °C and 756 torr formed by the decomposition of 125 g of sodium azide is 71.65 L

the answer is option a.