Question

An unknown amount of sodium azide (NaN3) reacts and produces 0.033 moles of nitrogen gas. What mass of sodium metal is produced

Answer 1

Answer:

Mass of sodium metal is 130.87 gram

Explanation:

The complete reaction is

2 NaN3 --> 2 Na + 3 N2

We know that PV = nRT

n = $\frac{PV}{RT}$

On substituting the given values, we get

$n = \frac{\frac{99707}{101325}*75 }{0.082 *(273.15 +15)} \\n = 3.02$moles of N2

Sodium azide's molar mass

3.02 *(2/3) = 2.013 moles

Mass = 2.03 * 65.01 = 130.87 gram