Home
Class 12
CHEMISTRY
What is E^(c).(red) for the reaction: Cu...

What is `E^(c)._(red)` for the reaction`: Cu^(2+)+2e^(-) rarr Cu` in the half cell `Pt_(S^(2)|CuS|Cu)`. if `E^(c-)._(Cu^(2+)|Cu)` is `0.34V` and `K_(sp)` of `CuS=10^(-35)`?

A

`0.34V`

B

`-0.6925V`

C

`+0.6925V`

D

`-0.66V`

Text Solution

Verified by Experts

The correct Answer is:
b
`E_(S^(2-)|CuS|Cu)=E^(c-)._(Cu^(2+)|Cu)+(0.059)/(2)log K_(sp)CuS`
`=0.34+(0.059)/(2)log10^(-35)=-0.925V`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exerciseassertion -Reasoning|25 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exerciseinterger|8 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercisemultiple Correct Ansers|53 Videos

  • D AND F BLOCK ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|29 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives (Subjective)|14 Videos

Similar Questions

Explore conceptually related problems

Electrochemical equivalent of Cu in the reaction Cu^(2+) + 2e^(-) rarr Cu(s) is :

What is DeltaG^(@) for the following reaction Cu^(+2)(aq)+2Ag(s)rarrCu(s)+2Ag E_(Cu^(+2)//Cu)^(@)=0.34V E_(Ag^(+)//Ag)^(@)=0.8V

Consider the cell reaction : Mg(s)+Cu^(2+)(aq) rarr Cu(s) +Mg^(2+)(aq) If E^(c-)._(Mg^(2+)|Mg(s)) and E^(c-)._(Cu^(2+)|Cu(s)) are -2.37 and 0.34V , respectively. E^(c-)._(cell) is

Which is/are correct among the following? Given the half cell EMFs E_(Cu^(2+)//Cu)^(@)=0.337V, E_(Cu^(+)|Cu)^(@)=0.521V

For the disproportion of copper: 2 Cu^(+) to Cu^(+2) + Cu E^(0) is :- Given E^(0) for Cu^(+2)//Cu is 0.34 V & E^(0) for Cu^(+2)//Cu^(+) is 0.15 V:

(CU^(+) ((aq)) is unstable in solution and undergoes simultaneous oxidation and reduction, according to the reaction 2Cu_((aq))^(+) Cu_((aq))^(2+) +Cu_((s)) choose E^(@) for the above reaction if E_(Cu^(2+)//Cu^(@))= 0.34V and E_(Cu^(2+)//Cu^(+) )= 0.15V

Cu^(2+)(aq.) is unstable in solution and under goes simultaneous oxidation and reduction according to the reaction 2Cu^(+)(aq.)hArr Cu^(2+)(aq.)+Cu(s) Choose the correct E^(@) for the above reaction if E_(Cu^(2+))^(@)//Cu = 0.34 V and E_(Cu^(2+))^(@)//Cu^(+) = 0.15 V

CENGAGE CHEMISTRY-ELECTROCHEMISTRY-Exercises Ingle Correct
  1. A current of 965A is passed for 1 s through 1L solution of 0.02N NiSO(...

    Text Solution

    |

  2. For the given cell Pt(D(2)|D^(o+))||H^(o+)|Pt(H(2)), if E^(c-).(D(2)|D...

    Text Solution

    |

  3. What is E^(c).(red) for the reaction: Cu^(2+)+2e^(-) rarr Cu in the ha...

    Text Solution

    |

  4. The combustion of butane in O(2) at 1 bar and 298K shows a decrease in...

    Text Solution

    |

  5. A half cell reaction Ag(2)S(s)+2e^(-) rarr 3Ag(s)+S^(2-) is carried ou...

    Text Solution

    |

  6. Which one is wrong if electrolysis of CH(3)COONa(aq) is made using Pt ...

    Text Solution

    |

  7. The calomel and quinhydrone electrodes are reversible with respect to ...

    Text Solution

    |

  8. The EMF of Ni-Cad battery is dependent of :

    Text Solution

    |

  9. The electrode with reaction :Cr(2)O(7)^(2-)(aq)+14H^(o+)(aq)+6e^(-) ra...

    Text Solution

    |

  10. For a given reaction :M^((x+n))+n e^(-)rarr M^(c+),E^(c-).(red) is kn...

    Text Solution

    |

  11. Select the wrong statement.

    Text Solution

    |

  12. Select the correct statement.

    Text Solution

    |

  13. From the following information, calculate the solubility product of A...

    Text Solution

    |

  14. The strongest oxidizing agent among the following is

    Text Solution

    |

  15. The weakest oxidizing agent among the following is

    Text Solution

    |

  16. Suppose that gold is being plated onto another metal in a electrolytic...

    Text Solution

    |

  17. Chromium plating is applied by electrolysis to objects suspended in a ...

    Text Solution

    |

  18. 20 Ml of KOH solution was titrated with 0.20 M H(2)SO(4) solution in a...

    Text Solution

    |

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

    Text Solution

    |

  20. k=4.95xx10^(-5) S cm^(-1) for a 0.001 M solution. The reciprocal of th...

    Text Solution

    |