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The strongest acid is...

The strongest acid is

A

`H_(3)AsO_(4)`

B

`H_(3)AsO_(3)`

C

`H_(3)PO_(3)`

D

`H_(3)PO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
On increasing of oxidation number of central atom, acid strength increases . So `H_(3)"AsO"_(4) gt H_(3)"sO"_(3) and H_(3)PO_(4) gt H_(3)PO_(3) ` . On increasing size of the central atom, acid strength decreases. So `H_(3)PO_(4) gt H_(3)"AsO"_(4)` .
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