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6.2g of a sample containing Na2CO3, NaHC...

`6.2g` of a sample containing `Na_2CO_3, NaHCO_3` and non-volatile inert impurity on gentle heating loses 5% of its mass due to reaction `2NaHCO_3 rarr Na_2 CO_3 + H_2 O + CO_2` . Residue is dissolved in water and formed `100mL` solution and its `10mL` portion requires `7.5 mL` of `0.2M` aqueous solution of `BaCI_2` for complete precipitation of carbonates. Determine mass (in gram) of `Na_2 CO_3` in the original sample.

A

1.59

B

1.06

C

0.53

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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NARENDRA AWASTHI-STOICHIOMETRY-Level 2 (Q.1 To Q.30)
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