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10 g of sample of mixture of CaCl(2) and...

10 g of sample of mixture of `CaCl_(2)` and NaCl are treated to precipitate all the calcium as `CaCO_(3)`. This `CaCO_(3)` is heated to convert all the Ca to CaO and the final mass of `CaCl_(2)` in the original mixture is

A

0.321

B

0.162

C

0.218

D

0.12

Text Solution

Verified by Experts

a) `CaCl_(2) + NaCl = 10g`
Let, weight of `CaCl_(2)` = xg
`CaCl_(2) to CaCO_(3) to CaO`
Moleof CaO = `(1.62)/(56) rArr x/111 = 1.62/56 x = 3.21g`
`%` of `CaCl_(2)` = (3.21/10 x 100) = 32.1%`
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