Home
Class 12
CHEMISTRY
When water is electrolysed, hydrogen and...

When water is electrolysed, hydrogen and oxygen gas are produced. If 1.008 g of `H_(2)` is liberated at the cathode. What mass of `O_(2)` is formed at the anode?

A

32g

B

16g

C

8g

D

4g

Text Solution

Verified by Experts

The correct Answer is:
C
`(W_(1))/(W_(2)) = (E_(1))/(E_(2))`
`(1.008)/(W_(2)) = (1.008)/(8)`
`:. W_(2) = 8 g`
Where, `E_(1) and E_(2)` are equivalent masses of hydrogen and oxygen respectively
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    OP TANDON|Exercise One or more than correct answer|19 Videos

  • ELECTROCHEMISTRY

    OP TANDON|Exercise Assertion- Reason|27 Videos

  • ELECTROCHEMISTRY

    OP TANDON|Exercise OBJECTIVE TYPE QUESTION (LEVEL -A)|194 Videos

  • COORDINATION COMPOUNDS

    OP TANDON|Exercise SBJECTIVE TYPE|96 Videos

  • HALOALKANES AND HALOARENES

    OP TANDON|Exercise Single Interger answer type questions|14 Videos

Similar Questions

Explore conceptually related problems

When water is electrolysed, hydrogen and oxgen gas are produced. If 1.008 g of H_(2) is liberated at cathode, calcualate the mass of O_(2) is formed at anode.

When hydrogen burns is oxygen, water is formed and when water is electrolysed, then hydrogen and oxygen are produced. What type of reaction takes place : (a) in the first case. (b) in the second case ?

In what ratio by mass, hydrogen and oxygen are produced by the electrolysis of water ?

If 0.024 L of H_(2) gas is formed at the cathode, the volume of O_(2) gas formed at the anode under identical conditions, is:

In the electrolysis of an aqueous solution of NaOH , 2.8 litres of O_(2)(g) is liberated at the anode at NTP . Volume of hydrogen gas liberated at the cathode at NTP will be

The volume of oxygen liberated from 0.68g of H_(2)O_(2) is

When molten magnesium oxide was electrolysed for a certain period , 150 mg of Mg was deposited on the cathode . The volume of oxygen gas in cm^3 at STP conditions liberated at the anode during the same period is (Atomic mass of Mg = 24 g mol^(-1) )

When the electrolytis of silver sulphate was carried out by Pt electrodes. 1-6 g oxygen was liberated at the anode, the amount of silver deposited at cathode will be

Copper sulphate solution is electrolysed between two platinum electrodes. A current is passed unit 1.6 g of oxygen is liberated at anode. The amount of copper deposited at the cathode during the same period is:

What mass of hydrogen and oxygen will be produced on complete electrolysis of 18 g of water?

OP TANDON-ELECTROCHEMISTRY-OBJECTIVE TYPE QUESTION (LEVEL -B)
  1. How many coulombs are required for the oxidation of 1 mol of H(2)O(2) ...

    Text Solution

    |

  2. A current of 2.0A passed for 5 hours through a molten metal salt depos...

    Text Solution

    |

  3. When water is electrolysed, hydrogen and oxygen gas are produced. If 1...

    Text Solution

    |

  4. The cell potential (E) and the free energy change (Delta G) accompanyi...

    Text Solution

    |

  5. The units of conducivity are :

    Text Solution

    |

  6. The reference calomel electrode is made from which of the following ?

    Text Solution

    |

  7. In preparing a salt bridge we sue KCl because

    Text Solution

    |

  8. The increase in the equivalent conductance of a salt solution on dilut...

    Text Solution

    |

  9. When 96500 coulombs of electricity are passed through nickel sulphate ...

    Text Solution

    |

  10. Al^(3+)(aq) + 3e^(-) rightarrow Al(s) E^(@) = -1.66V Cu^(2+)(aq) + 2...

    Text Solution

    |

  11. For which of these oxidation/reduction pairs will the reduction potent...

    Text Solution

    |

  12. 2Ag^(+)(aq) + Cu(s) rightarrow Cu^(2+)(aq) + 2Ag(s) The standard pot...

    Text Solution

    |

  13. (10Cl^(-)(aq) + 2MnO(4)^(-)(aq) + 16H^(+)(aq) rightarrow 5Cl(2)(g) + 2...

    Text Solution

    |

  14. What takes place when zinc metal is added to an aqueous solution conta...

    Text Solution

    |

  15. In the galvanizing process, iron is coated with zinc. The resulting ch...

    Text Solution

    |

  16. What is the sign of DeltaG^(Theta) and the values of K for an electroc...

    Text Solution

    |

  17. Consider a volatic cell based on these half -cell : Ag^(+) (aq.) + e...

    Text Solution

    |

  18. If E(cell)^(ɵ) for a given reaction is negative, which gives the corre...

    Text Solution

    |

  19. Which of the following solutions is used as an anti-rusting solution

    Text Solution

    |

  20. If the pressure of H2 gas is increase from (1) atm to 100 atm. Keepin...

    Text Solution

    |