1.

An aqueous solution of salt 'R' when treated with dil. HCl, a colourless gas is given out. The gas so evolved when passed through acidified KMnO_(4) decolourisesKMnO_(4) solution. The salt 'R' is

Answer»

`Na_(2)CO_(3)`
`NaClO_(3)`
`NaNO_(2)`
`Na_(2)SO_(3)`

Solution :Since .R. gives a COLOURLESS gas on reaction with dil. HCl, so it CONTAINS `CO_(3)^(2-) or SO_(3)^(2-)` as anion (i.e. `CO_(2) or SO_(2)` is evolved)
Since the gas decolourises acidified `KMnO_(4)` solution so it is `SO_(2)` and thus the anion present is `SO_(3)^(2-)` i.e., the salt .R. is `Na_(2)SO_(3)`.


Discussion

No Comment Found

Related InterviewSolutions