Question

What is the volume of a sample of CO2 at STP that has a volume of 75.0mL at 30.0°C and 91kPa

Answer 1

60.7 ml is the volume of a sample of CO2 at STP that has a volume of 75.0mL at 30.0°C and 91kPa.

Explanation:

Data given:

V1 = 75 ml

T1 = 30 Degrees or 273.15 + 30 = 303.15 K

P1 = 91 KPa

V2  =?

P2 = 1 atm or 101.3 KPa

T2 = 273.15 K

At STP the pressure is 1 atm and the temperature is 273.15 K

applying Gas Law:

$\frac{P1VI}{T1}$= $\frac{P2V2}{T2}$

putting the values in the equation of Gas Law:

V2 = $\frac{P1V1T2}{P2T1}$

V2 = $\frac{91 X 75 X 273.15}{303.15 X 101.3}$

V2 = 60.7 ml

at STP the volume of carbon dioxide gas is 60.7 ml.