Home
Class 12
CHEMISTRY
After electrlysis of NaCI solution with ...

After electrlysis of `NaCI` solution with inert electrodes for a certain period of time `600mL` of the solution was left. Which was found to be `1N` in `NaOH`. During the same time, `31.75 g` of `Cu` deposited in the copper voltameter in series the electrolytic cell. calculate the percentage yield of `NaOH` obtained.

Text Solution

Verified by Experts

The correct Answer is:
`eta = 60%`
`Cu^(+2) +2e^(-) rarr Cu`
`n_(E) = I n_(Cu) = 0.5`
`2H_(2)O +2e^(-) rarr H_(2)+2OH^(-)`
`n_(e^(-)) = 1 n_(OH^(-)) = 1`
`N = (1)/(600) xx 100 = (5)/(3)`
%yield `=(1)/(5//3) xx 100 = 60%`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-04 [B]|23 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-05 [A]|28 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-03|24 Videos

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise ORGANIC CHEMISTRY|483 Videos

  • HYDROCARBON

    ALLEN|Exercise MCQ|15 Videos

Similar Questions

Explore conceptually related problems

After electrolytes of NaCl solution with inert electrodes for a certain period of time 600 mL of the solution was left which was found to be 1N in NaOH. During the same time, 31.75 g of Cu deposited in the copper voltmeter in seris with the electrolytic cell. Calcualte the percentage yield of NaOH obtained.

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:

3.0 g of impure Na_2CO_3 is dissolved in water and the solution is made up to 250 mL . To 50 " mL of " this solution, 50 " mL of " 0.1 N HCL is added and the mixture, after shaking well, required 10 " mL of " 0.16 N NaOH solution for cojmplete neutralisation. Calculate the percentage purity of the sample of Na_2CO_3 .

6.5 g mixture of sample containing KOH, NaOH, and Na_2CO_3 was dissolved in H_2O and the volume was made up to 250 mL. 25 " mL of " this solution requires 26.23 " mL of " 0.5 N H_2SO_4 using methyl orange as indicator, and 19.5 " mL of " same H_2SO_4 using phenolphathalein as indicator for complete neutralisation. Calculate the percentage of KOH, NaOH, and Na_2CO_3 in the sample.

Products of electrolysis depend on the nature of material being electrlysed and the type of electrodes being used. If the electrode is inert (e.g., platinum or gold), it does not participate in the chemical reaction and acts only as source or sink for electrons. On the other hand, if the electrode is reactive, it participates in the electrode reaction. thus, the products of electrolysis may be different for reactive and inert electrodes. Aqueous copper sulphate solution and aqueous silver nitrate solution are electrolysed by 1 ampere current for 10 minutes in separate electrolytic cells. In these question, a statement of assertion followed by a statement of reason. choose the correct answer out of the following choices. Q. Assertion (A): The mass of copper and silver, deposited on the cathode be same. Reason (R): Copper and silver have different equivalent masses.

Products of electrolysis depend on the nature of material being electrlysed and the type of electrodes being used. If the electrode is inert (e.g., platinum or gold), it does not participate in the chemical reaction and acts only as source or sink for electrons. On the other hand, if the electrode is reactive, it participates in the electrode reaction. thus, the products of electrolysis may be different for reactive and inert electrodes. Aqueous copper sulphate solution and aqueous silver nitrate solution are electrolysed by 1 ampere current for 10 minutes in separate electrolytic cells. In these question, a statement of assertion followed by a statement of reason. choose the correct answer out of the following choices. Q. Assertion (A): At equilibrium condition E_(cell)=0 or Delta_(r)G=0 . Reason (R): E_(cell) is zero when both electrodes of the cell are of the same metal.

ALLEN-ELECTROCHEMISTRY-EXERCISE-04 [A]
  1. An electric current is passed through electrolytic cells in series one...

    Text Solution

    |

  2. Cd amalgam is preapred by electrolysis of a solution CdCI(2) using a ...

    Text Solution

    |

  3. After electrlysis of NaCI solution with inert electrodes for a certain...

    Text Solution

    |

  4. During the discharge of a lead storage battery, the density of sulphur...

    Text Solution

    |

  5. The e.m.f. of the cell obtained by combining Zn and Cu electrode of a ...

    Text Solution

    |

  6. Same quantity of charge is being used to liberate iodine (at anode) an...

    Text Solution

    |

  7. 100mL CuSO(4)(aq) was electrolyzed using inert electrodes by passing 0...

    Text Solution

    |

  8. A current of 3.6A is a passed for 6 hrs between Pt electrodes in 0.5L ...

    Text Solution

    |

  9. Calculate the EMF of a Daniel cell when the concentartion of ZnSO(4) a...

    Text Solution

    |

  10. EMF of the cell Zn ZnSO(4)(a =0.2)||ZnSO(4)(a(2))|Zn is -0.0088V at 25...

    Text Solution

    |

  11. The EMF of the cell M|M^(n+)(0.02M) ||H^(+)(1M)|H(2)(g) (1atm)Pt at 25...

    Text Solution

    |

  12. Equinormal solution of two weak acids, HA(pK(a) =3) and HB(pK(a) =5) a...

    Text Solution

    |

  13. In two vessels each containing 500 ml water, 0.5m mol of aniline (K(b)...

    Text Solution

    |

  14. The emf of the cell Ag|KI(0.05M)||AgNO(3)(0.05M)|Ag is 0.788V. Calcula...

    Text Solution

    |

  15. The cell Pt, H(2) (1atm) H^(+) (pH =x)| Normal calomel Electrode has a...

    Text Solution

    |

  16. Estimate the cell potential of a Daniel cell having 1.0 M Zn^(++) and ...

    Text Solution

    |

  17. Consider the cell AG|AgBr(s)|Br^(-)||AgCI(s)|CI^(-)|Ag at 25^(@)C. The...

    Text Solution

    |

  18. The pK(sp) of AgI is 16.07 if the E^(@) value for Ag^(+)//Ag is 0.7991...

    Text Solution

    |

  19. Voltage of the cell Pt, H(2) (1atm)|HOCN(1.3 xx 10^(-3)M)||Ag^(+) (0....

    Text Solution

    |

  20. The standard oxidation potential of Zn referred to SHE is 0.76V and th...

    Text Solution

    |