1.

The pair ofcompound whichcannotexist togatherinsolution is

Answer»

`NaHCO_(3) and NaOH`
`Na_(2)CO_(3) and NaHCO_(3)`
`Na_(2)CO_(3) and NaOH`
`NaHCO_(3)` and `NaCI`

Solution :`NaHCO_(3)` and `NaOH`cannot coexist insolution because `NaHCO_(3)` is an acid sqalt it REACTS withthe base `NaOH` as follows
`NaHCO_(3) + NaOH rarr Na_(2)CO_(3) +H_(2)O`


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