Question

8g impure Na CO2 is put into 1L water. 10 mL of
this solution required 9 mL 0.1 N HCl for complete
neutralisation. The percentage purity of Na2CO3
sample is :
(1) 49.6%
(2) 59.6%
(3) 40.4%
(4) 45%
​

Answer 1

Answer:

(3) 40.4%

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