You collect the following data as you complete the experiment. water temperature

Question

You collect the following data as you complete the experiment.

water temperature = 29.0°C

gas volume in cylinder after reaction = 60. mL

atmospheric pressure = 101.7 kPa

What is the total number of moles of gas in the cylinder?
0.0024 mol (correct)

What is the partial pressure of CO2 gas in the cylinder? (Refer to the Water Vapor Pressure Table.)
97.5 kPa (incorrect, I also tried 97.3 and 96.1)

What is the number of moles of CO2 gas in the cylinder?
0.0023 mol (correct)

What is the final volume of CO2 gas produced during the reaction?
59 mL (correct)

Explanation / Answer

total pressure in cylinder = 101.7 kPa

vapour pressure of water at 29oC = 30 torr = 3.999 kPa

pressure of CO2 gas in cylinder = total pressure - vapour pressure of water

= 101.7 - 3.999

pressure of CO2 gas = 97.701 kPa

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