Question

Which compound would produce an acidic aqueous solution? Which compound would produce an acidic aqueous solution? RbH C2H2 PH3 CaH2 HF

Answer 1

HF

Step-by-step explanation:

Answer 2

Answer: Option (e) is the correct answer.

Explanation:

A compound that will dissociate in water or an aqueous solution to give hydrogen ions(
`H^(+)`) is known as an acidic substance.

When RbH is dissolved in aqueous solution then it dissociates as follows.

`RbH \rightarrow Rb^(+) + H^(-)`.

`C_(2)H_(2)` is non-polar in nature. So, it will not dissociate into ions when dissolved in an aqueous solution.

`PH_(3)` will also remain neutral and does not dissociate into ions.

`CaH_(2)` when dissolved in water then it dissociates as follows.

`CaH_(2) \rightarrow Ca^(2+) + 2H^(-)`

Whereas when HF is dissolved in aqueous solution then the reaction will be as follows.

`HF \rightarrow H^(+) + F^(-)`

Thus, we can conclude that out of the given options HF is the compound which will produce an acidic aqueous solution.