Learn how to solve problems like this one with our expert tutor.

Problem: A 3.90-g sample of a mixture of CaO and BaO is placed in a 1.00-L vessel containing CO2 gas at a pressure of 735 torr and a temperature of 26 oC. The CO2 reacts with the CaO and BaO, forming CaCO3 and BaCO3. When the reaction is complete, the pressure of the remaining CO2 is 155 torr .Calculate the number of moles of CO2 that have reacted.

FREE Expert Solution

We are asked to calculate the number of moles of CO2 that have reacted.


Calculate initial moles CO2:

Given: 

P = 735 torr = 0.967 atm

T = 26 oC +273.15 = 299.15 K

V = 1 L

R= 0.08206 L-atm/mol-K


View Complete Written Solution
Problem Details

A 3.90-g sample of a mixture of CaO and BaO is placed in a 1.00-L vessel containing CO2 gas at a pressure of 735 torr and a temperature of 26 oC. The CO2 reacts with the CaO and BaO, forming CaCO3 and BaCO3. When the reaction is complete, the pressure of the remaining CO2 is 155 torr .

Calculate the number of moles of CO2 that have reacted.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Gas Stoichiometry concept. If you need more Gas Stoichiometry practice, you can also practice Gas Stoichiometry practice problems.