Home
Class 12
CHEMISTRY
By how much will the potential of half-c...

By how much will the potential of half-cell `Cu^(2+)|Cu` change if the solution is diluted to 100 times at 298K?

A

increases b 59 mV

B

decreases by 59 mV

C

increases by 29.5 mV

D

decreases by 29.5 mV

Text Solution

Verified by Experts

The correct Answer is:
B

`E_(cell)=E_(cell)^(0)-(0.0591)/(2)log_(1)((1)/([Cu^(2+)]))`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISRY

    RESONANCE|Exercise CBSE Problems|34 Videos
  • ELECTRO CHEMISTRY

    RESONANCE|Exercise PHYSICAL CHEMITRY (ELECTROCHEMISTRY)|53 Videos
  • EQUIVALENT CONCEPT & TITRATIONS

    RESONANCE|Exercise Part -IV|22 Videos

Similar Questions

Explore conceptually related problems

A hydrogen electrode is immersed in a solution with pH = 0 (HCl). By how much will the potential (reduction) change if an equivalent amount of NaOH is added to this solution? (Take p_(H_(2) = 1atm) T=298K

If Cu^(2+)//Cu electrode is dilutes 100 times, the change in emf is

Consider a Galvenic cell, Zn(s) |Zn^(2+) (0.1M) ||Cu^(2+) (0.1M)|Cu(s) by what factor, the electrolyte in anodic half cell should be diluted to increase the emf by 9 mili volt at 298K .

For the electrochemical cell shown below Pt|H_2(p=1atm)|H^+(aq.,xM)||Cu^(2+)(aq.,1.0M)|Cu(s) The potentialis 0.49 V at 298 K. The pH of the solution is closest to:[Given, standard reduction potential, E^@ for Cu^(2+)//Cu is 0.34 V. Gas constant, R is 8.31 JK^-1mol^-1 Faraday constant, F is 9.65xx10^4JV^-1mol^-1 ]

State Faraday's first law of electrolysis . How much charge in terms of Faraday is required for the reduction of 1mol of Cu^(2+) to Cu. (b) Calculate emf of the following cell at 298 K : Mg(s) | Mg ^(2+)(0.1 M)||Cu^(2+) (0.01)|Cu(s) [Given E_(cell)^(@)=+ 2.71V, 1 F = 96500C mol^(-1)]

RESONANCE-ELECTROCHEMISRY-Advanced Level Problems
  1. Pt |{:((H(2))),(1atm):}:| pH = 2:|:|:pH =3 |:{:((H(2))Pt),(1atm):}:|. ...

    Text Solution

    |

  2. In the given figure the electrolytic cell contains 1L of an aqueous 1M...

    Text Solution

    |

  3. By how much will the potential of half-cell Cu^(2+)|Cu change if the s...

    Text Solution

    |

  4. Which of the following facts is not truegt

    Text Solution

    |

  5. Equivalent conductance of 1M CH(3)COOH is 10ohm^(-1) cm^(2) "equiv"^(-...

    Text Solution

    |

  6. Adding powdered Pb and Fe to a solution containing 1.0 M each of Pb^(2...

    Text Solution

    |

  7. Cost of electricity for the production of X litre H(2) at STP at catho...

    Text Solution

    |

  8. The reaction : Zn(s) + 2AgCl(g) rightarrow ZnCl(2)(aq) + 2Ag(s) oc...

    Text Solution

    |

  9. If the pressure of hydrogen gas is increased from 1 atm. To 100 atm, k...

    Text Solution

    |

  10. The equilibrium Cu^(+2)(aq)+Cu(s) hArr2Cu^(+) established at 20^(@)C...

    Text Solution

    |

  11. The E^(@) in the given figure is

    Text Solution

    |

  12. What is the cell entropy change ( in J K ^(-1)) of the following cell...

    Text Solution

    |

  13. Na- amalgam is prepared by electrolysis of NaCl solution using liquid...

    Text Solution

    |

  14. Zn amalgam is prepared by electrolysis of aqueous ZnCl(2) using Hg cat...

    Text Solution

    |

  15. A solution containing one mole per litre each of Cu(NO(3))(2),AgNO(3),...

    Text Solution

    |

  16. At 298 K the standard free energy of formation of H(2)O(l) is -237.20 ...

    Text Solution

    |

  17. Wlhich of the following cell can produce more electrical work?

    Text Solution

    |

  18. A hydrogen electrode is immersed in a solution with pH = 0 (HCl). By h...

    Text Solution

    |

  19. A current of 1.0 A was passed for 2 hr through a solution of cuprocyan...

    Text Solution

    |

  20. A resistance of 50Omega is registered when two electrodes are suspende...

    Text Solution

    |