Text Solution

Verified by Experts

The correct Answer is:
` A -PQRS ;B -Q ;C -PQRS ;D -Q `

`HPO_4^(2-) ` can give and lose `H^(+) `
` CO_3^(2-) ` can accept `H^(+) `
` H_2PO_3^(2-) ` can give and lost `H^(+)`
` H_2PO_2^(-) ` can accept ` H^(+) `
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