A sample of a mixture of `Na_(2)CO_(3) and NaHCO_(3)` is subjected to heating till there is no further loss in weight. Assuming, that the loss in weight of the sample is `22%` of the initial weight of the mixture due to the evolution of `CO_(2)`, find out the relative percentages of the two components in the mixture.

Explanation

(i) action of heating on the compounds `Na_(2)CO_(3) and NaHCO_(3)`.
(ii) determination of the mass of `Na_(2)CO_(3) and NaHCO_(3)` from the mass of `CO_(2)` produced
(iii) `84% NaHCO_(3)`
`16% Na_(2)CO_(3)`