The pair of compounds which cannot exist together in aqueous solution is: `(I) NaH_(2)PO_(4)` and `NaHCO_(3)" "(II) Na_(2)CO_(3)` and `NaHCO_(3)` `(III) NaOH` and `NaH_(2)PO_(2)" "(IV) NaHCO_(3)` and `NaOH`A. `I, II, III`B. `II, III`C. `I, IV`D. only `IV`

The pair of compounds which cannot exist together in aqueous solution

1.	The pair of compounds which cannot exist together in aqueous solution is: `(I) NaH_(2)PO_(4)` and `NaHCO_(3)" "(II) Na_(2)CO_(3)` and `NaHCO_(3)` `(III) NaOH` and `NaH_(2)PO_(2)" "(IV) NaHCO_(3)` and `NaOH`A. `I, II, III`B. `II, III`C. `I, IV`D. only `IV`
Answer» Correct Answer - D Acidic salt `NaHCO_(3)` and `NaOH` (base) react with each other so they cannot exist together in aqueous solution.

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The pair of compounds which cannot exist together in aqueous solution is: `(I) NaH_(2)PO_(4)` and `NaHCO_(3)" "(II) Na_(2)CO_(3)` and `NaHCO_(3)` `(III) NaOH` and `NaH_(2)PO_(2)" "(IV) NaHCO_(3)` and `NaOH`A. `I, II, III`B. `II, III`C. `I, IV`D. only `IV`

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