You set up your experiment to trap the gas produced when Pop Rocks® react with b

ID: 813773 • Letter: Y

Question

You set up your experiment to trap the gas produced when Pop Rocks® react with both soda and HCl as shown below.

You collect the following data as you complete the experiment.

water temperature = 21.0°C

gas volume in cylinder after reaction = 52 mL

atmospheric pressure = 101.5 kPa

Part A: What is the total number of moles of gas in the cylinder?

? mol

Part B: What is the partial pressure of CO2 gas in the cylinder?

? kPa

Part C: What is the number of moles of CO2 gas in the cylinder?

? mol

Part D: What is the final volume of CO2 gas produced during the reaction?

? mL

You set up your experiment to trap the gas produced when Pop Rocks???® react with both soda and HCl as shown below. You collect the following data as you complete the experiment. You collect the following data as you complete the experiment. water temperature = 21.0???°C gas volume in cylinder after reaction = 52 mL atmospheric pressure = 101.5 kPa Part A: What is the total number of moles of gas in the cylinder? ? mol Part B: What is the partial pressure of CO2 gas in the cylinder? ? kPa Part C: What is the number of moles of CO2 gas in the cylinder? ? mol Part D: What is the final volume of CO2 gas produced during the reaction? ? mL

Explanation / Answer

I'm going to assume the only gas produced is CO2 so the gas in the cylinder is CO2 and water vapor.

Look up the vapor pressure of water = 21 C

Use the ideal gas equation PV=nRT to come up with the total moles captured.

partial pressure of H2O = vapor pressure of water / 101.5 kPa

partial pressure of CO2 = total pressure - partial pressure of water

Use the ideal gas equation and the partial pressure of CO2 to calculate the moles of CO2

I'm not sure what the final question is asking. If they want the volume of CO2 on a dry basis, it would be 52 mL * partial pressure of CO2 / total pressure

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You set up your experiment to trap the gas produced when Pop Rocks® react with b

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