Use PV = nRT to solve for n = mols CO2.
mols CO2 = mols K2CO3
Then grams K2CO3 = mols K2CO3 x molar mass K2CO3.
%K2CO3 = (grams K2CO3/mass sample)*100 = ?
A 5.000g sample of a dry mixture of potassium hydroxide, potassium carboate and potassium chloride is reacted with 0.100 L of 2.00-molar HCl solution. A 249.0 mL sample of dry carbon dioxide gas, measured at 22.0 degree Celsius and 740.0 torr, is obtained from this reaction. What was the percentage of potassium carbonate in the mixture?
2 answers
27.68%
1 answer