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Which of the following consitute a set o...

Which of the following consitute a set of amphoteric species?
(a). `H_(2)O,H_(2)PO_(3)^(Theta), HPO_(4)^(2-)`
(b). `HC_(2)O_(4)^(Theta),H_(2)PO_(4)^(Theta),SO_(4)^(2-)`
(c). `H_(2)O,HPO_(4)^(2-),H_(2)PO_(2)^(Theta)`
(d). `H_(3)O^(o+),H_(2)PO_(4)^(Theta),HCO_(3)^(Theta)`

A

`H_(3)O^(+), H_(2)PO_(4)^(-), HCO_(3)^(-)`

B

`H_(2)O, HPO_(4)^(2-),H_(2)PO_(2)^(-)`

C

`H_(2)O, H_(2)PO_(4)^(-), HPO_(4)^(2-)`

D

`HC_(2)O_(4)^(-), H_(2)PO_(4)^(-), SO_(4)^(2-)`

Text Solution

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The correct Answer is:
C
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Out of the following, amphiprotic species are I. HPO_(3)^(2-) II. OH^(-) III. H_(2)PO_(4)^(-) IV. HCO_(3)^(-)

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