1.

When CO_(2) is passed through water, which of the following species will be present in water?

Answer»

`H_(2)CO_(3), CO_(2), CO_(3)^(2-), HCO_(3)^(-)`
`HCO_(3)^(-),CO_(3)^(2-)`
`CO_(3)^(-), CO_(2)`
`H_(2)CO_(3), CO_(2)`

SOLUTION :`H_(2)O+CO_(2)hArr H^(+)+HCO_(3)^(-)`
`HCO_(3)^(-)hArr H^(+)+CO_(3)^(2-)`
The species PRESENT will be : `H^(+),CO_(3)^(2-), HCO_(3)^(-) and H_(2)CO_(3)` (unionized).


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