Calculate the potential for half cell containing 0.10 M `K_(2)Cr_(2)O_(7)(aq),0.20" M "Cr^(3+)(aq) and 1.0xx10^(-4)MH^(+)(aq)`. The half-cell reaction is `Cr_(2)O_(7)^(2-)(aq)+14H^(+)(aq)+6e^(-)to2Cr^(3+)(aq)+7H_(2)O(l)`
and the standard electrode potential is given as `E^(@)=1.33V`.

What type of a battery is lead storage battery? Write the anode and cathode reactions and the overall cell reaction occurring in the operation of a lead storage battery. (b) Calucluate the potential for half-cell containing. 0.10 M K_(2)Cr_(2)O_(7)(aq), 0.20 M Cr^(3+) (aq) and 1.0 xx 10^(-4) M H^(+) (aq) The half -cell reaction is Cr_(2)O_(7)^(2-) (aq) + 4H^(+) (aq) + 6 e^(-) to 2 Cr^(3+) (aq) + 7H_(2)O(l) and the standard electron potential is given as E^(o) = 1.33V .

Calculate the potential for a half cell reaction containing 0.1 M K_(2)Cr_(2)O_(7), 0.20 M Cr^(3+)(aq) and 1.0xx10^(-4) M H^(+)(aq) . The half cell reaction is : Cr_(2)O_(7)^(2-)(aq)+14 H^(+)(aq)+6e^(-)to2 Cr^(3+)(aq)+7H_(2)O (l) The standard electrode potential (E^(@))=1.33 V .

The electrode with reaction :Cr_(2)O_(7)^(2-)(aq)+14H^(o+)(aq)+6e^(-) rarr 2Cr^(3+)(aq)+7H_(2)O can be represented as

The cell reaction Cr_2O_7^(2-)(aq)+14H^+(aq)+6Fe^(2+)(aq)to6Fe^(3+)(aq)+2Cr^(3+)(aq)+7H_2O(l) is best represented by:

Cr_(2)O_(7)^(2-)+H^(+)+SO_(3)^(2-) to Cr^(3+)(aq.)+SO_(4)^(2-)

Complete the chemical equations : Cr_2O_7^(2-) (aq) + Fe^(2+)(aq) + H^(+)(aq) to

Fe^(2+)(aq.)+Cr_(2)O_(7)^(2-)+H^(+) to Fe^(3+)(aq.)+Cr^(3+)