Home
Class 12
CHEMISTRY
To one molar solution of a trivalent met...

To one molar solution of a trivalent metal salt, electrolysis was carried out and 0.667 M was the concentration remaining after electrolysis. Calculate the quantity of electricity passed.

Text Solution

Verified by Experts

Given : Initial concentration of the solution
`" "=1M`
The concentration remaining after electrolysis
`" "=0.667 M`
Solution :
`therefore` The amount deposited `=1-0.667 M`
`" "=0.333M`
1F = Faraday = `3 times 0.333 M`
`" "=0.999 M`
`" "=1M`
`therefore` 1 Faraday current is used.
Promotional Banner

Topper's Solved these Questions

  • ELECTRO CHEMISTRY

    SURA PUBLICATION|Exercise UNIT TEST|6 Videos
  • ELECTRO CHEMISTRY

    SURA PUBLICATION|Exercise ADDITIONAL QUESTION AND ANSWERS (LONG ANSWER)|6 Videos
  • CO-ORDINATION CHEMISTRY

    SURA PUBLICATION|Exercise LONG ANSWER|1 Videos
  • GOVT. MODEL QUESTION PAPER - 2019-2020

    SURA PUBLICATION|Exercise Part_IV|10 Videos

Similar Questions

Explore conceptually related problems

0.5 F of electric current was passed though 5 molar solutions of AgNO_(3), CuSO_(4) and AlCl_(3) connected in series. Find out the concentration of each of the electrolyte after the electrolysis ?

To 1 M solution of AgNO_(3) , 0.75 F quantity of current is passed. What is the concentration of the electrolyte, AgNO_(3) remaining in the solution?

Consider a tank which initially holds V_(0) liter of brine that contains a lb of salt. Another brine solution, containing b lb of salt per liter is poured into the tank at the rate of eL//"min" . The problem is to find the amount of salt in the tank at any time t. Let Q denote the amount of salt in the tank at any time. The time rate of change of Q, (dQ)/(dt) , equals the rate at which salt enters the tank at the rate at which salt leaves the tank. Salt enters the tank at the rate of be lb/min. To determine the rate at which salt leaves the tank, we first calculate the volume of brine in the tank at any time t, which is the initial volume V_(0) plus the volume of brine added et minus the volume of brine removed ft. Thus, the volume of brine at any time is V_(0)+et-ft The concentration of salt in the tank at any time is Q//(V_(0)+et-ft) , from which it follows that salt leaves the tank at the rate of f(Q/(V_(0)+et-ft)) lb/min. Thus, (dQ)/(dt)=be-f(Q/(V_(0)+et-ft))Q=be A tank initially holds 100 L of a brine solution containing 20 lb of salt. At t=0, fresh water is poured into the tank at the rate of 5 L/min, while the well-stirred mixture leaves the tank at the same rate. Then the amount of salt in the tank after 20 min.

SURA PUBLICATION-ELECTRO CHEMISTRY-PROBLEMS FOR PRACTICE
  1. What is the electrochemical equivalent of a substance when 150 gm of i...

    Text Solution

    |

  2. The electrochemical equivalent of an electrolyte is 2.35 gm amp^(-1)se...

    Text Solution

    |

  3. To 1 M solution of AgNO(3), 0.75 F quantity of current is passed. What...

    Text Solution

    |

  4. 0.5 F of electric current was passed through 5 molar solution of AgNO(...

    Text Solution

    |

  5. To one molar solution of a trivalent metal salt, electrolysis was carr...

    Text Solution

    |

  6. A conductance cell has platinum electrodes, each with 5 cm^(2) area an...

    Text Solution

    |

  7. Specific conductance of 1 M KNO(3) solution is observed to be 5.55 tim...

    Text Solution

    |

  8. The equivalent conductances at infinite dilution of HCl, CH(3)COONa " ...

    Text Solution

    |

  9. The standard reduction potential for the reaction Sn^(4+)+2e^(-) rarr ...

    Text Solution

    |

  10. Write the Nernst equation for the half cell Zn^(2+)""((aq))//Zn((s)).

    Text Solution

    |

  11. The emf of the cell Cd//CdCl(2)," "25H(2)O" "//AgCl((s))Ag is 0.675 V....

    Text Solution

    |

  12. The standard free energy change of the reaction M^(+)""((aq))+e^(-) ra...

    Text Solution

    |

  13. The emf of the half cell Cu^(2+)""((aq))//Cu((s)) containing 0.01 M Cu...

    Text Solution

    |

  14. If E(1)=0.5V corresponds to Cr^(3+)+3e^(-) rarr Cr((s)) " and " E(2)=0...

    Text Solution

    |

  15. Calculate the standard emf of the cell having the standard free energy...

    Text Solution

    |

  16. Calculate the emf of the cell Zn//ZnO(2), OH^(-)""(aq),-HgO""//Hg give...

    Text Solution

    |

  17. The equilibrium constant of cell reaction: Ag((s))+Fe^(3+) iff Fe^(2+)...

    Text Solution

    |

  18. Calculate the emf of the cell having the cell reaction 2Ag^(+)+Zn iff ...

    Text Solution

    |

  19. The emf values of the cell reactions Fe^(3+)+e^(-) rarr Fe^(2+) " and ...

    Text Solution

    |

  20. A zinc rod is placed in 0.095 M zinc chloride solution at 25^(@)C. EmF...

    Text Solution

    |