Home
Class 12
CHEMISTRY
An acidic solution of copper (II) sulpha...

An acidic solution of copper (II) sulphate containing some contaiminations of zinc and iron (II) ions was electrolysed till all the copper is deposited. If electrolysis is further continued for sometime, the product liberated at cathode is

A

`Fe`

B

`Zn`

C

`H_(2)`

D

Alloy of Zn and Fe.

Text Solution

Verified by Experts

The correct Answer is:
C
After deposition of `Cu^(2+)` ions `H^(+)` ion from the `H_(2)O` molecule will be discharged at cathode as its SRP is higher than of `Fe^(2+)` and `Zn^(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

An acidic solution of copper (II) sulphate can be stored in iron vessel.

An acidic solution of Cu^(2+) ions containing 0.4 g of Cu^(2+) ions is electrolysed until all the copper is deposited. Calculate the valume of oxygen evolved at N.T.P.

An acidic solution of Cu^(2+0 salt containing 0.4g of Cu^(2+) is electrolyzed until all the copper is deposited. The electrolysis is continued for seven more minutes with the volume of solution kept at 100mL and the current at 1.2A . Calculate the volume of gases evolved at STP during the entire electrolysis.

A solution of copper (II) sulphate us electrolysed between copper electrodes by a current of 10 amperes exactly for 1 hour. What changes occur at the electrodes and in the solution ?

A solution of copper sulphate was stored in an iron container. After a few days, some holes were seen in the iron container. Explain the observation.

RESONANCE-ELECTROCHEMISRY-Advanced Level Problems
  1. How much will the reduction potential of a hydrogen electrode change w...

    Text Solution

    |

  2. The standard electrode potentials (reduction) of Pt//Fe^(3+),Fe^(+2) a...

    Text Solution

    |

  3. An acidic solution of copper (II) sulphate containing some contaiminat...

    Text Solution

    |

  4. Acetic acid is titrated with NaOH solution. Which of the following sta...

    Text Solution

    |

  5. Which statement is correct?

    Text Solution

    |

  6. During the electrolysis of 0.1 M CuSO(4) solution using coppepr electr...

    Text Solution

    |

  7. Consider the following Galvanic cell:- By what value the cell vol...

    Text Solution

    |

  8. Pt|Cl(2)(P(1)atm)|HCl(0.1M)|Cl(2)(P(2)atm)|Pt, cell reaction will be s...

    Text Solution

    |

  9. Pt |{:((H(2))),(1atm):}:| pH = 2:|:|:pH =3 |:{:((H(2))Pt),(1atm):}:|. ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. Which of the following facts is not truegt

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |