Home
Class 12
PHYSICS
Calculate the electric current required ...

Calculate the electric current required to deposit `0.972 g` of chromium in three hours. ECE of chromium is `0.00018 g C^(-1)`

Text Solution

Verified by Experts

We have
`m=Zit`
or `0.972 g = (0.00018 g C^(-1) I ( 3 xx 3600 s)`
or, `(0.972)/(0.00018 xx 3 xx 3600) A = 0.50A`
Promotional Banner

Topper's Solved these Questions

  • THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT

    HC VERMA|Exercise Worked out example|8 Videos

  • THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT

    HC VERMA|Exercise Short Question|9 Videos

  • THE SPECIAL THEORY OF RELATIVITY

    HC VERMA|Exercise Exercise|28 Videos

  • X-Rays

    HC VERMA|Exercise Exercise|27 Videos

Similar Questions

Explore conceptually related problems

Calculate the following Number of atoms in 32.0 g Br_2

Calculate the molality of an aqueous solution containing 3.0g of urea (mol.mass=60) in 250g of water.

An electric current of 0.4 A is passed through a silver voltameter fro half an hour.Find the amount of silver deposited on the cathode. ECE of silver = 1.12 xx 10^(-4) kg C^(-1)

What current strength in amperes will be required to liberate 10 g of iodine from potassium iodide solution in one hour ?

An electroplating unit plates 3.0 g of silver on a brass plate in 3.0 minutes. Find the current used by the unit. The electrochemical equivalent of silver is 1.12 xx 10^(-6) kg C^(-1) .

Find the amount of silver liberated at cathode if 0.500 A of current is passed through AgNO_3 electrolyte for 1 hour. Atomic weight of silver s 107.9 g mol^(-1)

Calculate the molality of a solution by dissolving 0.850g of ammonia ( NH_3 ) in 100g of water.

HC VERMA-THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT-Exercise
  1. Calculate the electric current required to deposit 0.972 g of chromium...

    Text Solution

    |

  2. An electric current of 2.0 A passes through a wire of resistance 25 Om...

    Text Solution

    |

  3. A coil of resistance 100 Omega is connected across a battery of emf 6....

    Text Solution

    |

  4. The specification on a heater coil is 250 V, 500 W. Calculate the resi...

    Text Solution

    |

  5. A heater coil is to be constructed with a nichrome wire (rho = 1.0 xx ...

    Text Solution

    |

  6. A bulb with rating 250V, 100W is connected to a power supply of 220 V ...

    Text Solution

    |

  7. An electric bulb, when connected across a power supply of 220V, consum...

    Text Solution

    |

  8. A servo voltage stabiliser restricts the voltage output to 220 V +- 1%...

    Text Solution

    |

  9. An electric bulb marked 220 V, 100 W will get fused if it is made to c...

    Text Solution

    |

  10. An immersion heater rated 1000 W, 220 V is used to heat 0.01 m^3 of wa...

    Text Solution

    |

  11. An electric kettle used to prepare tea, takes 2 minutes to boil 4 cups...

    Text Solution

    |

  12. The coil of an electric bulb takes 40 watts to start glowing. If more ...

    Text Solution

    |

  13. The 2.0 Omega resistor show in figure is dipped into a calorimeter con...

    Text Solution

    |

  14. The temperatures of the junctions of a bismuth-silver thermocouple are...

    Text Solution

    |

  15. Find the thermo-emf developed in a copper-silver thermocopule when the...

    Text Solution

    |

  16. Find the neutral temperature and inversion temperature of copper-iron ...

    Text Solution

    |

  17. Find the charge required to flow through an electrolyte to liberate on...

    Text Solution

    |

  18. Find the amount of silver liberated at cathode if 0.500 A of current i...

    Text Solution

    |

  19. An electroplating unit plates 3.0 g of silver on a brass plate in 3.0 ...

    Text Solution

    |

  20. Find the time requried to liberate 1.0 litre of hydrogen at STP in an...

    Text Solution

    |

  21. Two voltameters, one having a solution of silver salt and the other of...

    Text Solution

    |