Home
Class 12
CHEMISTRY
The metal that cannot obtained by electr...

The metal that cannot obtained by electrolysis of an aqueous solution of its salts is `:`

A

Ag

B

Mg

C

Cu

D

Cr

Text Solution

Verified by Experts

The correct Answer is:
B
The reduction potntial of Mg is less than that of water `(E^@ =- 0. 83 V)`. Hence their ions in the aqueous solution cannot be reduced instead water will be reduced `2H_2O+ 2e^- rarr H_2O +1OH^_`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    A2Z|Exercise Assertion-Reasoning Questions|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 metal which cannot be obtained by electrolysis of aqueous solution of its salts is

The metal that can't be obtained by electrolysis of an aquencous solution of in salts is

A2Z-ELECTROCHEMISTRY-Section D - Chapter End Test
  1. The standard reduction potential for Fe^(2+) //Fe and Sn^(2+) //Sn ele...

    Text Solution

    |

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

    Text Solution

    |

  3. Standared reduction electrode potenitals of three metals A, B and C ...

    Text Solution

    |

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

    Text Solution

    |

  5. For the electrochemical cell, (M|M^(o+))||(X^(c-)|X), E^(c-).((M^(o+)|...

    Text Solution

    |

  6. Given : (i) CU^(2+) + 2e^- rarr Cu, E^@ = 0.337 V (ii) Cu^(2+) +e...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  9. The mass of copper deposited from a solution of CuSO4 by passage of 45...

    Text Solution

    |

  10. A solution of a salt of a metal was electrolysed for 150 minutes wit...

    Text Solution

    |

  11. The resistance of 0. 01 N NaCl solution at 25^@C is 200 Omega . Cell c...

    Text Solution

    |

  12. The metal that cannot obtained by electrolysis of an aqueous solution ...

    Text Solution

    |

  13. When the sample of copper with zinc impurityn is to be purified by ele...

    Text Solution

    |

  14. In an electrolytic cell, the flow of electrons is form

    Text Solution

    |

  15. A solution of sodium sulphate in qater is electrolysed using inert ele...

    Text Solution

    |

  16. Which of the following liberate hydrogen on reaction with dilute H2 SO...

    Text Solution

    |

  17. When during electrolusis of a solution of AgNO3, 9650 coulmbs of char...

    Text Solution

    |

  18. These question consist of two statements each, printed as Assertion an...

    Text Solution

    |

  19. These question consist of two statements each, printed as Assertion an...

    Text Solution

    |

  20. These question consist of two statements each, printed as Assertion an...

    Text Solution

    |