1.

Which of the following pair of compounds cannot co-exist in aqueous solution?

Answer»

`Na_(2)CO_(3),K_(2)CO_(3)`
`NaHCO_(3),NaOH`
`Rb_(2)CO_(3),KHCO_(3)`
`NaOH` and `KCI`

SOLUTION :`NaHCO_(3) + NaOH RARR Na_(2)CO_(3)+H_(2)O`


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