Home
Class 12
CHEMISTRY
An aqueus solution of NA(2)SO(4) was ele...

An aqueus solution of `NA_(2)SO_(4)` was electrolysed for 10 min. 82 ml of a gas was produced at anode over water at `27^(@)C` at a total pressure of 580 torr. Determine the curretn that was used.
(Vapour pressure of `H_(2)O` at `27^(@)C = 10` torr) `(R = 0.082` atm lit/mol/K)

A

`0.1` Amp

B

`1.25` Amp

C

`2.23` Amp

D

`1.61` Amp

Text Solution

Verified by Experts

The correct Answer is:
D
`(1)/(2) H_(2)O rarr (1)/(4)O_(2)+H^(+)+e^(-)`
`n_(O_(2))=(PV)/(RT)= (((580-10))/(760)xx82xx10^(-3))/(0.082xx300)=2.5xx10^(-3)`
`i=(q)/(t)=(n_(e ).F)/(t)=(n_(O_(2))xx4xx96500)/(10xx60)=1.61` Amp.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-02|36 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-03|24 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise INTEGER TYPE|18 Videos

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise ORGANIC CHEMISTRY|483 Videos

  • HYDROCARBON

    ALLEN|Exercise MCQ|15 Videos

Similar Questions

Explore conceptually related problems

An equeous solution of Na_(2)SO_(4) was electrolysed for 10 min. 82 ml of a gas was produced at anode and collected over water at 27^(@)C at a total pressure of 580 torr. Determine the current that was used in amp. Given: Vapour pressure of H_(2)O at 27^(@)C = 10 torr R = 0.082 atm L//mol-K Write your answer exclusing decimal places.

Find the osmotic pressure M/20 solution of urea at 27^(@)C (S = 0.0821 lit atm K^(-1) mol^(-1))

If 250 mL of N_(2) over water at 30^(@)C and a total pressure of 740 torr is mixed with 300 mL of Ne over water at 25^(@)C and a total pressure of 780 torr, what will be the total pressure if the mixture is in a 500 mL vessel over water at 35^(@)C . (Given : Vapour pressure (Aqueous tension )of H_(2)O at 25^(@)C and 35^(@)C are 23.8, 31.8 and 42.2 torr respectively. Assume volume of H_(2)O(l) is negligible in final vessel)

The volume of 2.8g of CO at 27^(@)C and 0.821 atm pressure is (R=0.0821 lit. atm mol^(-1)K^(-1))

Calculate the volume occupied by 4.045 xx 10^(2) molecules of oxygen at 27^(@)C and having a pressure of 700 torr.

ALLEN-ELECTROCHEMISTRY-Part (II) EXERCISE-01
  1. For the net cell reaction of the cell Zn(s) |Xn^(2+) ||Cd^(2+) |Cd(s) ...

    Text Solution

    |

  2. How many faraday are required to reduce one mol of MnO(4)^(-) to Mn^(2...

    Text Solution

    |

  3. Cu^(+) + e rarr Cu, E^(@) = X(1) volt, Cu^(2+) + 2e rarr Cu, E^(@) =...

    Text Solution

    |

  4. Zn|Zn^(2+)(c(1)) || Zn^(2+)(c(2))|Zn. For this cell DeltaG is negative...

    Text Solution

    |

  5. Pt(H(2))(p(1))|H^(o+)(1M)|(H(2))(p(2)),Pt cell reaction will be exergo...

    Text Solution

    |

  6. Pt |{:((H(2))),(1atm):}:| pH = 2:|:|:pH =3 |:{:((H(2))Pt),(1atm):}:|. ...

    Text Solution

    |

  7. M^(2+) +2e rarr M. 0.275 g of metal M is deposited at the cathode due ...

    Text Solution

    |

  8. In an electrochemical cell that function as a voltaic cell:-

    Text Solution

    |

  9. A certain metal salt solution is electrolysed in series with a silver ...

    Text Solution

    |

  10. The cell Pt(H(2))(1atm) |H^(+) (pH =?) T^(-) (a=1)AgI(s), Ag has emf, ...

    Text Solution

    |

  11. Using the information in the preceding problem, calculate the solubili...

    Text Solution

    |

  12. If same quantity of electricity is passed through CuCI and CuSO(4) the...

    Text Solution

    |

  13. For Zn^(2+) //Zn, E^(@) =- 0.76, for Ag^(+)//Ag, E^(@) = -0.799V. The...

    Text Solution

    |

  14. The oxidation potential of a hydrogen electrode at pH = 10 and P(H(2))...

    Text Solution

    |

  15. If x is specific resistance of the electrolyte solution and y is the m...

    Text Solution

    |

  16. E^(@) (SRP) of different half cell given {:(E(Cu^(2+)//Cu)^(@) =0.34...

    Text Solution

    |

  17. The conductivity of a saturated solution of Ag(3)PO(4) is 9 xx 10^(-6)...

    Text Solution

    |

  18. A saturated solution in AgA (K(sp)=3xx10^(-14)) and AgB (K(sp)=1xx10^(...

    Text Solution

    |

  19. An aqueus solution of NA(2)SO(4) was electrolysed for 10 min. 82 ml of...

    Text Solution

    |

  20. Na-Amalgam is prepared by electrolysis of aq. NaCI solution using 10gm...

    Text Solution

    |