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Find the percentage purity of lime STONE CaCO3(containing some impurity) whose 5.235 gm react with 5000cc of N/5 HCl? (Impurity will not react with HCl)

Find the percentage purity of lime STONE CaCO3(containing some impurity) whose 5.235 gm react with 5000cc of N/5 HCl? (Impurity will not react with HCl)

Grade:12th pass

1 Answers

Vikas TU
14149 Points
7 years ago
moles of CaCO3 actually would react with  HCl would be => 5000/5000 = 1 moles.
And hence,
 
weight of CaCO3  = > 1 * 100 = 100 gm. 
As CaCO3 come to be 100 gm that is more than impurity together and hence it could not be possible.
Check if the Normality or volume of HCl data is different.
 

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