Question

Pure hydrogen sulphide is stored in a tank of $100$ litre capacity at ${20}^{0}C$ and $2$ atm pressure . The mass of the gas will be:

• A. $34$
• B. $340$ g
• C. $282.68$ g
• D. $28.24$ g

Answer 1

Answer: (C)

$282.68$ g

Given that:

Pressure = 2 atm

Temperature $={20}^{o}C$

T = 293 K

Volume = 100 L

Using ideal gas equation as:

PV=nRT

The gas is hydrogen sulfide.

Molar mass = 34 g/mol

$2\times 100=\frac{\text{Mass of the gas}}{34}\times 0.0821\times 293$

Mass of the gas $=282.68gm$