A reaction produces 156 mL of carbon dioxide gas collected
over water at a temperature of 25.0 °C and a pressure of 99.81
kPa. Calculate the volume of CO2 at STP.
Question
Question
A reaction produces 156 mL of carbon dioxide gas collected
over water at a temperature of 25.0 °C and a pressure of 99.81
kPa. Calculate the volume of CO2 at STP.
Answer:
150mL
Explanation:
at stp, pressure = 1atmospheres, temperature 20°C
V=156mL
T=25°C
P=99.81kPa =99.81*0.00986923=0.9850atm
P
1
V
1
T
1
=
P
2
V
2
T
2
V
2
=
V
1
×
P
1
P
2
×
T
2
T
1
=
156 mL
×
1.053
bar
1
bar
×
273.15
K
298.15
K
=
150 mL