Question

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

collectedover water if the volume was determined at 37C and
98.7kPa?

Answer 1

Answer: The mass of chlorine gas is 4.54 grams.

Step-by-step explanation:

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

`PV=nRT`

Or,

`PV=(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* 3.34L=(m)/(35.45g/mol)* 8.31\text{ L kPa }mol^(-1)K^(-1)* 310K\\\\m=4.54g`

Hence, the mass of chlorine gas is 4.54 grams.