Home
Class 12
CHEMISTRY
A current of 10 A is passed for 80 min a...

A current of 10 A is passed for 80 min and 27 seconds through a cell containing dilute sulfuric acid.
(1) How many moles of oxygen gas will be liberated at the anode ?
(2) Calculate the amount of zinc deposited at the cathode when another cell containing `ZnSO_(4)` solution is connected in series.

Text Solution

Verified by Experts

`underset((65g))underset("1 mol")(Zn^(2+)) +underset(2F)(2e^(-)) to Zn` (at cathode)
2 F or 2 `xx` 96500 C deposit zinc = 65 g
4870 C deposit zinc `=(65)/(2xx96500)xx48270g=16.256g`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    ICSE|Exercise Follow up Problems|48 Videos

  • ELECTROCHEMISTRY

    ICSE|Exercise EXERCISE (PART-I Objective Questions)|28 Videos

  • DISTINCTION BETWEEN PAIRS OF COMPOUNDS

    ICSE|Exercise QUESTIONS |155 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    ICSE|Exercise EXERCISE (PART-I ( OBJECTIVE QUESTIONS )) (Fill in the blanks)|60 Videos
ICSE-ELECTROCHEMISTRY-ISC EXAMINATION QUESTIONS (PART-II Numerical Problems)
  1. A current of 10 A is passed for 80 min and 27 seconds through a cell ...

    Text Solution

    |

  2. A cell is constructed by dipping a zinc rod in 0.1 M zinc nitrate solu...

    Text Solution

    |

  3. For the cell : Zn"|"Zn^(2+) (a=1)"||"Cu^(2+) (a=1)"|"Cu Given that ...

    Text Solution

    |

  4. Calculate the equivalent conductivity of 1M H(2)SO(4), whose specific...

    Text Solution

    |

  5. A current of 10 A is passed for 80 min and 27 seconds through a cell ...

    Text Solution

    |

  6. Calculate E("cell") at 25^(@)C for the reaction : Zn+Cu^(2+) (0.2...

    Text Solution

    |

  7. A 0.05 M NaOH solution offered a resistance of 31.6 ohms in a conduct...

    Text Solution

    |

  8. For the following cell, calculate the emf: Al//Al^(3+) (0.01 M)"||"...

    Text Solution

    |

  9. A solution of 0.1 N KCl offers a resistance of 245 ohms. Calculate th...

    Text Solution

    |

  10. How many electrons will flow when a current of 5 amperes is passed thr...

    Text Solution

    |

  11. Consider the reaction 2Ag^(+) +Cd to 2Ag to 2Ag +Cd^(2+). The stan...

    Text Solution

    |

  12. Calculate the maximum work that can be obtained from the given electr...

    Text Solution

    |

  13. Calculate the value of E("cell") at 298 K for the following cell: ...

    Text Solution

    |

  14. 0*05 " M " NaOH solution offered a resistance of 31*6 ohm in a conduct...

    Text Solution

    |

  15. 0*3605 g of a metal is deposited on the electrode by passing 1*2 amper...

    Text Solution

    |

  16. How many hours does it take to reduce 3 moles of Fe^(3+) to Fe^(2+) wi...

    Text Solution

    |

  17. Calculate the emf of the following cell reaction at 298 K: Mg(s) +C...

    Text Solution

    |

  18. The specific conductance of a 0.01 M solution of acetic acid at 298 K...

    Text Solution

    |

  19. Calculate the number of coulombs required to deposit 5.4g of Al when ...

    Text Solution

    |

  20. A 0.05 M NH OH solution offers the resistance of 50 ohms to a conduct...

    Text Solution

    |