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 V
Promotional Banner

Topper's Solved these Questions

  • JEE MAIN

    JEE MAINS PREVIOUS YEAR|Exercise CHEMISTRY|150 Videos
  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise Chemistry (Section B)|10 Videos

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 )

JEE MAINS PREVIOUS YEAR-JEE MAIN-CHEMISTRY
  1. The complex that can show FIGUREac- and mer-isomers is

    Text Solution

    |

  2. A gas undergoes expansion according to the following graph. Calculate ...

    Text Solution

    |

  3. Given 2H(2)O rarr O2 + 4H^+ + 4e^- , E0 = -1.23 V. Calculate electrode...

    Text Solution

    |

  4. Calculated the mass of FeSO(4).7H(2)O, which must be added in 100 kg o...

    Text Solution

    |

  5. Number of chiral centres in Pencillin is

    Text Solution

    |

  6. 0.3 g [ML(6)]Cl(3) of molar mass 267.46 g/mol is reacted with 0.125 M ...

    Text Solution

    |

  7. Preparation of Bakelite proceeds via reactions:

    Text Solution

    |

  8. The major product in the following reaction is :

    Text Solution

    |

  9. White phosphorus on reaction with concentrated NaOH solution in an ine...

    Text Solution

    |

  10. Kjeldahl method cannot be used for :

    Text Solution

    |

  11. Which of the following compounds is likely to show both Frenkel a...

    Text Solution

    |

  12. Arrange the following bonds according to their averge bond energies ...

    Text Solution

    |

  13. Consider the following plots of rate constant versus (1)/(T) f...

    Text Solution

    |

  14. Assertion: pH of water increases on increasing temperature. Reason: ...

    Text Solution

    |

  15. Hydrogen has three isotopes (A),(B) and (C). If the number of neu...

    Text Solution

    |

  16. The radius of the second Bohr orbit, in terms of the Bohar radiu...

    Text Solution

    |

  17. The correct order of the calculated spin - only magnetic moments ...

    Text Solution

    |

  18. Assertion: It has been found that for hydrogenation reaction the catal...

    Text Solution

    |

  19. An unsaturated hydrocarbon X absorbs tow hydrogen molecules on cata...

    Text Solution

    |

  20. The major product [B] in the following seqyence of reaction is :

    Text Solution

    |