Home
Class 12
CHEMISTRY
10800 C of electricity through the elect...

10800 C of electricity through the electrolyte depostited 2.977gm of metal with atomic mass 106.4a.m.u. The valency of metal cation is

A

4

B

3

C

2

D

1

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise EXERCISE|529 Videos
  • d-AND f- BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|1089 Videos
  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|303 Videos

Similar Questions

Explore conceptually related problems

On dissolving 2.0 g of metal in sulphuric acid ,4.51 g of the metal sulphate was formed . The specific heat of the metal is 0.057 cal g^(-1).^(@)C^(-1) . What is the valency of metal ?

Two faraday of electricity is passed through a solution of CuSO 4 ​ . The mass of copper deposited at the cathode is : (at mass of Cu=63.5 u)

A metal oxide has the formula X_2O_3 . It can be reduced by hydrogen to give free metal and water. 0.1596g of metal oxide requires 6mg of hydrogen for complete reduction. The atomic mass of the metal (in amu) is :

A small charged metal sphere is situated in an earthed metal box. Illustrates the electric field between the sphere and the metal box. The radius r of the sphere is 2.4 cm. The magnitude of the charge q on the sphere is 0.76 n C.

Lithium has a bcc structure .Its density is 530 kg m^(-3) and its atomic mass is 6.94 g mol^(-1) .Calculate the edge length of a unit cell of lithium metal (N_(A) = 6.02 xx 10^(23) mol^(-1))

A solution containing 2.675 g of CoCl_3 .6NH_3 (molar mass = 267.5 g mol^-1 ) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of AgNO_3 to give 4.78 g of AgCl (molar mass = 143.5 g mol^-1 ). The formula of the complex is : (At. mass of Ag = 108 u)

In a sample of excited hydrogen atoms electrons make transition from n=2 to n=1. Emitted quanta strike on a metal of work function 4.2eV. Calculate the wavelength in A associated with ejected electron having maximum kinetic energy

The Q value of a nuclear reaction A + b rarr C + d is defined by Q = [ m_A + m_b -m_C- m_d]c^2 where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reaction and state whether the reaction is exothermic or endothermic. "_6^12C + "_6^12C rarr "_10^20Ne + "_2^4He Atomic masses are given to be m( "_6^12C ) = 12.000000 u m( "_10^20Ne ) = 19.992439 u

Compute the typical de-Broglie wavelength of an electron in a metal at 27^@C and compare it with the mean separation between two electrons in a metal which is given to be about 2xx10^-10m .

MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. Which of the following will increase the voltage of the cell Sn(s)+2Ag...

    Text Solution

    |

  2. The resistance of 0.1N solution of acetic acid 250 ohm. When measured ...

    Text Solution

    |

  3. 10800 C of electricity through the electrolyte depostited 2.977gm of m...

    Text Solution

    |

  4. Find the charge in coulombs on 1g ion of N^(-3)

    Text Solution

    |

  5. A current of 3A was passed through a solution of AuCl4^- ions using go...

    Text Solution

    |

  6. In the diagram given below the value of x is

    Text Solution

    |

  7. By how much will the potential of a zinc electrode change if the solut...

    Text Solution

    |

  8. The e.m.f of the cell: Cu(s)|Cu^(2+)(1M)||Ag^(+)(1M)|Ag is 0.46V. The ...

    Text Solution

    |

  9. In infinite dilution of aqueous solution of BaCl2 molar conductivity o...

    Text Solution

    |

  10. Specific conductance of 0.1M sodium chloride solution is 1.06×10-2 ohm...

    Text Solution

    |

  11. Saturated solution of KNO3 with agar-agar is used to make 'salt bridge...

    Text Solution

    |

  12. Aluminium displaces hydrogen fromacids, but copper does not. A galvani...

    Text Solution

    |

  13. Given that the standard electrode potentials of metals are: K^+|K=-2.9...

    Text Solution

    |

  14. The standard reduction potentials for two reactions are given below: A...

    Text Solution

    |

  15. An electric current is passed through silver voltameter connected to a...

    Text Solution

    |

  16. The e.m.f of the following Daniell cell at 298K is E1. Zn|ZnSO4(0.01M)...

    Text Solution

    |

  17. Same amount of electric current is passed thorugh solution of AgNO3 an...

    Text Solution

    |

  18. Calculate the EMF of the cell, containing nickel and copper electrodes...

    Text Solution

    |

  19. Given E(Fe^(3+)|Fe)^@=-0.36V, E(Fe^(2+)|Fe)^@=-0.439V. The value of st...

    Text Solution

    |

  20. A^@m for NaCl, HC1 and NaAc are 126.4, 425.9 and 91.0 S cm^2 mol-1 res...

    Text Solution

    |