Question

Pure hydrogen sulphide is stored in a tank 100 litre capacity at 20 degree Celsius and 2 ATM pressure. The mass of the gas will be

Answer 1

Answer: 284 grams

Explanation:

According to the ideal gas equation:

$PV=nRT$

P = Pressure of the gas = 2 atm

V= Volume of the gas = 100 L

T= Temperature of the gas = $20°C=(20+273)=293K$      

R= Gas constant = 0.0821 atmL/K mol

n=  moles of gas= ?

$n=\frac{PV}{RT}=\frac{2\times 100}0.0821\times 293}=8.314moles$

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of $H_2S$ = 34.1 g/mol

$8.314=\frac{\text{Given mass}}{34.1}$

${\text{Given mass}}=284grams$

Thus the mass of the gas will be 284 grams.