Question

What is the mass of a 3.34L sample if chlorine gas

Answer 1

Answer: The mass of chlorine gas is 4.54 grams.

Explanation:

To calculate the mass of the gas, we use the equation given by ideal gas equation:

$PV=nRT$

Or,

$PV=\frac{m}{M}RT$

where,

P = pressure of the gas = 98.7 kPa

V = Volume of gas = 3.34 L

m = given mass of chlorine gas = ?

M = Molar mass of chlorine gas = 35.45 g/mol

R = Gas constant = $8.31\text{ L kPa }mol^{-1}K^{-1}$

T = Temperature of the gas = $37^oC=[37+273]=310K$

Putting values in above equation, we get:

$98.7kPa\times 3.34L=\frac{m}{35.45g/mol}\times 8.31\text{ L kPa }mol^{-1}K^{-1}\times 310K\\\\m=4.54g$

Hence, the mass of chlorine gas is 4.54 grams.