Home
Class 12
CHEMISTRY
Given 2H(2)O rarr O2 + 4H^+ + 4e^- , E0 ...

Given `2H_(2)O rarr O_2 + 4H^+ + 4e^-` , `E_0 = -1.23 V`. Calculate electrode potential at pH = 5.

Text Solution

Verified by Experts

The correct Answer is:
-0.93

NA
Promotional Banner

Similar Questions

Explore conceptually related problems

Given that, Co^(3+) +e^(-)rarr Co^(2+) E^(@) = +1.82 V 2H_(2)O rarr O_(2) +4H^(+) +4e^(-), E^(@) =- 1.23 V . Explain why Co^(3+) is not stable in aqueous solutions.

50mL of 0.1M CuSO_(4) solution is electrolysed with a current of 0.965A for a period of 200sec. The reactions at electrodes are: Cathode: Cu^(2+) +2e^(-) rarr Cu(s) Anode: 2H_(2)O rarr O_(2) +4H^(+) +4e . Assuming no change in volume during electrolysis, calculate the molar concentration of Cu^(2+),H^(+) and SO_(4)^(2-) at the end of electrolysis.

A button cell used in watches functions as following Zn(s) + Ag _2 O(s) + H_2 O(l) 2 A g(s) + Zn^(2+) (aq) = 2 OH^- (aq) If half cell potentials are Zn^(2+) (aq) +2e^- rarr Zn (s) , E^@ =- 0. 76 V Af_2 O(s) +H_2 O (l) +2e^- rarr 2Ag(s) + 2OH^- (aq) , E^@ =0. 34 V . The cell potential will be .

In acid medium, MnO_(4)^(c-) is an oxidizing agent. MnO_(4)^(c-)+8H^(o+)+5e^(-) rarr Mn^(2+)+4H_(2)O If H^(o+) ion concentration is doubled, electrode potential of the half cell MnO_(4)^(c-), Mn^(2+)|Pt will

What would be the electrode potential for the given half cell reaction at pH = 5 ? 2H_(2)Oto O_(2) + 4H^(+) + 4e^(-) , E_(red)^(@) = 1.23V ( R=8.314Jmol^(-1)K^(-1) Temp = 298K, oxygen under std. atm. Pressure of 1 bar )