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H(2)PO(4)^(-) वाली तीन अभिक्रियाएँ नीचे ...

`H_(2)PO_(4)^(-)` वाली तीन अभिक्रियाएँ नीचे दी है :
(i) `H_(3)PO_(4) + H_(2)O to H_(3)O^(+) + H_(2)PO_(4)^(-)`
(ii) `H_(2)PO_(4)^(-) + H_(2)O to HPO_(4)^(2-) + H_(3)O^(+)`
(iii) `H_(2)PO_(4)^(-) + OH^(-) to H_(3)PO_(4)+ O^(2-)`
उपयुक्त में `H_(2)PO_(4)^(-)` किस में अम्ल की तरह क्रिया करता है ?

A

II only

B

I and II

C

III only

D

I only

Text Solution

Verified by Experts

The correct Answer is:
A
Only in reaction (II), `H_(2)PO(4)^(-)` gives `H^(+)` to `H_(2)O`. Thus, behaves as an acid.
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