1.

Statement-1. In water, orthoboric acid behaves as a weak monobasic acid Statement-2. In water, orthoboric acid acts as a proton donor.

Answer»

Statement-1 is TRUE, Statement-2 is True , Statement-2 is the correct explanation of Statement - 1 .
Statement-1 is True, Statement - 2 is True , Statement-2 is NOT a correct explanation for Statement-1.
Statement-1 is True, Statement-2 is False.
Statement-1 is False, Statement-2 is True.

Solution :`H_(3)BO_(3)` (ORTHOBORIC acid ) is a WEAK MONOBASIC acid
`H_(3)BO_(3)+H_(2)O hArr B(OH)_(4)^(-)+H^(+)`
It does not donate proton but accepts `OH^(-)` ion from water. Thus, statement-1 is true but statement -2 is false.


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