Calculate the percent Lithium cabonate by mass in the carbonate solution?

Apr 2013
2
0
A quantity of 25.0 mL of 6.0 M HCL solution is added to a 11.50g sample of an aqueous solution of lithium cabonate. The carbon dioxide gas that is generated is collected over water at 20.0 celsius and an atmospheric pressure of 725 torr. When the gas levels are equalized, the volume of the gas is found to be 225 mL. Calculate the percent lithium cabonate by mass in the carbonate solution. PLEASE SHOW ME HOW TO DO THIS. :)
 
Apr 2013
2
0
Starting to get scared because no one is replying. :(
 
May 2010
491
8
use the pv=nRT equation to calculate n the number of mols of CO2 in the 0.225 l of gas.Correct by subtracting the mol of water in the gas.Each mol of CO2 = 1 mol of Lithium carbonate.Convert the final n to gms by multiplying by MW of compound. Find % in sample.Post your answers.The vapor pressure of water at 20 deg C=17.5 mm Hg
 

Unknown008

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May 2010
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Mauritius
Starting to get scared because no one is replying. :(
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