1.

Which of the following can act as lowery- Bronsted acid well as base?

Answer»

`HCL`
`SO_4^(2-)`
`HPO_4^(2-)`
`Br^-`

Solution :`HPO_4^(2-)` can have the ability of accept to PROTON to FORM `H_2PO_4^-`.
It can also have the abilityto DONATE a proton to form `PO_4^(-3)`


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