`E_(cell)^(@)` for some half cell reaction are given below on the basis of these mark the correct answer
`I H^(+)(aq)+e^(-)rarr1/2 H_(2)(g),E_(cell)^(-)=0.00 V`
II`2H_(2)O(l)rarrO_(2)(g)+4H^(+)(Aq)+4e^(-),E_(cell)^(-)=1.23 V`
III `2SO_(4)^(2-)(aq)rarrS_(2)O_(8)^(2-)(aq)+2e^(-)+2e^(-),E_(cell)^(-)=1.96 V`

Options

A. in dilute suplhuric acid solution hydrogen will be reduced at cathode
B. in concentrated sulplhuric acid solution water will be oxidised at anode
C. in dilute sulphuric acid solution water will be oxidised at cathode
D. in dilute sulphuric acid solution `SO_(4)^(2-)` ion will be oxidised to tetrathionate ion anode

Answer

D

Explanation

In dilue `H_(2)SO_(4)` solution hydrogen will be reduced at cathode