In the reaction : `3Br_(2)+6CO_(3)^(2-)+3H_(2)Oto5Br^(-)+BrO_(3)^(-)+6HCO_(3)^(-)`

Options

A. Bromine is oxidised and carbonate is reduced
B. Bromine is neither oxidised nor reduced
C. Bromine is oxidised and water is reduced
D. Bromine is both reduced and oxidised.

Answer

A

Explanation

For the reaction :
`Zn(s)+2H^(+)(aq)toZn^(2+)(aq)+H_(2)(g)`
`E=E^(@)-(RT)/(nF)"in "([Zn^(2+)](pH))/([H^(+)]^(2))`
On adding `H_(2)SO_(4)`, the `[H^(+)]` increases . This will increases the value of E and , therefore reaction proceeds more to the right.