Question

Assume that you are collecting CO2 using the system that you will assemble in the lab. If the room temperature is 22.0oC and the barometric pressure is 761 torr, what is the partial pressure of CO2 in the buret? Express it in torr.

Answer 1

The partial pressure of CO2 in the buret at 22.0°C and 761 torr barometric pressure, after subtracting the vapor pressure of water, is 741.2 torr.

Step-by-step explanation:

To determine the partial pressure of CO2 in the buret, you must subtract the vapor pressure of water from the barometric pressure. The vapor pressure of water at 22.0°C can be found in a standard data table, which is typically around 19.8 torr. Hence, the partial pressure of CO2 would be:

Partial pressure of CO2 = Barometric pressure - Vapor pressure of water

Substitute the given values:

Partial pressure of CO2 = 761 torr - 19.8 torr

Partial pressure of CO2 = 741.2 torr