Home
Class 12
CHEMISTRY
The emf of given cell Pt- H2 | H^+|H2 - ...

The emf of given cell `Pt- H_2 | H^+|H_2 - Pt` is :

A

`(RT)/F log P_1/P_2`

B

`(RT)/(2F)log ep_1/P_2`

C

`(RT)/F- logP_@/P_1`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`H_2 rarr 2H^+ +2e`
`2H^+ +2erarr H_2`
`E_("cell") = E_(OP_(H))^@ + (RT)/(2F) log_e. ([P_H_2]_1)/([PH_2]_2) = (RT)/(2F) Log_e .P_1/P_2`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    A2Z|Exercise Section B - Assertion Reasoning|22 Videos

  • ELECTROCHEMISTRY

    A2Z|Exercise AIPMT/NEET Questions|35 Videos

  • ELECTROCHEMISTRY

    A2Z|Exercise Fuel Cell And Batteries|10 Videos

  • COORDINATION COMPOUNDS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF METALS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The emf of given cell Pt - underset(P_(1))(H_(2))|H^(+)|underset(P_(2))(H_(2) - Pt is :

What will be the emf for the given cell ? Pt|H_(2)(g,P_(1))|H^(+)(aq)|H_(2)(g,P_(2))|Pt

The emf of the following cell is observed to be 0.118V at 25^(@)C . [Pt,H_(2)(1atm)|HA(100mL 0.1M||H^(o+)(0.1M)|H_(2)(1atm)|Pt] a. If 30mL of 0.2M NaOH is added to the negative terminal of battery, find the emf of the cell. b. If 50mL of 0.2 M NaOH is added to the negative terminal of battery, find the emf of teh cell.

A2Z-ELECTROCHEMISTRY-Construction And Working Of A Cell, Electrochemical Series And Its Applications
  1. The electrode potential becomes equal to standard electrode potential ...

    Text Solution

    |

  2. Delta G^@ of the cell reaction AgCl (s) = 1/2 H2 (g) =Ag(s) H^+ + Cl...

    Text Solution

    |

  3. The emf of given cell Pt- H2 | H^+|H2 - Pt is :

    Text Solution

    |

  4. Emf of the cell Ni| Ni^(2+) ( 0.1 M) | Au^(3+) (1.0M) Au will be E...

    Text Solution

    |

  5. Which statements is true about a spontaneous cell reaction in galvanic...

    Text Solution

    |

  6. If the pressure of H2 gas is increase from (1) atm to 100 atm. Keepin...

    Text Solution

    |

  7. For the redox change , Zn(s) + underset (0.1M)FuCu^2+ rarr underset...

    Text Solution

    |

  8. The reduction prtential of hydrgen delctrode when placed I buffer solu...

    Text Solution

    |

  9. The standard emf for the cell cell reaction Zn + Cu^(2+) rarr Zn^(2+)...

    Text Solution

    |

  10. How many kJ of energy is spent when a currebnt of (4) amp passes for 2...

    Text Solution

    |

  11. In which of the following electrochemical cell, overall cell reaction ...

    Text Solution

    |

  12. The standard emf of a cell having one electron change is found to be 0...

    Text Solution

    |

  13. Given,{:(E(Fe^(3+) //Fe)^o + 3e Cr E^o =- 0.036 V),(E(Fe^(3+) //Fe)^o...

    Text Solution

    |

  14. In a cell that untillizes the reaction , Zn((s)) + 2 H((aq))^+ rarr ...

    Text Solution

    |

  15. The thermodynamic efficiency of cell is given by

    Text Solution

    |

  16. The reaction 1//2H2(g)+AgCl(s) rarr H^(o+)(aq)+Cl^(c-)(aq)+Ag(s) oc...

    Text Solution

    |

  17. The reduction potential of a half-cell consisting of a Pt electrode im...

    Text Solution

    |

  18. The highest electrical conductivity of the following aqueous solutions...

    Text Solution

    |

  19. Given that E^@ (Zn^(2+) //Zn) =- 0.763 V and E^@ ( Cd^(2+) //Cd) = -0....

    Text Solution

    |

  20. A huydrgen electrode is dipped is a solution of pH = 3.0 at 25^@C The...

    Text Solution

    |