Home
Class 12
CHEMISTRY
Lambda(m)^(@) for NaCl, HCl and NaAc are...

`Lambda_(m)^(@)` for NaCl, HCl and NaAc are 126.4, 425.9 and `"91 S.cm"^(2)."mol"^(-1)` respectively. Calculate `Lambda^(@)` for Hac.

Text Solution

Verified by Experts

`Lambda_(m(Hac))^(@)=lambda_(H^(+))^(@)+lambda_(Ac^(-))^(@)`
`=lambda_(H^(+))^(@)+lambda_(Cl^(-))^(@)+lambda_(Ac^(-))^(@)+lambda_(Na^(+))^(@)-lambda_(Cl^(-))^(@)-lambda_(Na^(+))^(@)`
`=Lambda_(m(HCl))^(@)+Lambda_(m(NaAc))^(@)-Lambda_(m(NaCl))^(@)`
`=425.9+91.0-126.4=390.5" S.cm"^(2)."mol"^(-1)`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED NCERT TEXTBOOK PROBLEMS (NCERT EXERCISE QUESTIONS)|35 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|30 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED CBSE SCANNER (ALL INDIA - 2018)|5 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 8 (Answer the following questions)|10 Videos

  • ENVIRONMENTAL CHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 14(Answer the following questions)|6 Videos

Similar Questions

Explore conceptually related problems

Lambda_(m)^(@) of NaCl, HCl and CH_(3)COONa are 126.4, 425.9 and "91.0 S.cm"^(2)."mol"^(-1) respectively. Lambda_(m)^(@) for CH_(3)COOH will be -

Write down Kohlrausch's law of independent migration of ions. Find out the molar conductivity of ammonium hydroxide at infinite dilution (Lambda_(m)^(@)) at 298K, given that (Lambda_(m)^(@)) values for NH_(4)Cl, NaCl and NaOH are 149, 126 and "248 S.cm"^(2)."mol"^(-1) respectively at 298 K.

Equivalent conductivities at infinite dilution (Lambda^(@)) of NH_(4)Cl, NaOH and NaCl are 130, 217.6 and "108.9 ohm"^(-1)."cm"^(2).g-equiv"^(-1) respectively at 25^(@)C . Calculate Lambda^(@) of NH_(4)OH at 25^(@)C

The equivalent conductances at infinite dilution of HCl, CH_(3)COONa and NaCl are "426.16, 91.0 and 126.45 ohm"^(-1) cm^(2)" gm.equivalent"^(-1) respectively.. Calculate the lambda_(oo) of acetic acid.

The values of Lambda_(eq)^(@) of KI and KCl solutions are 150.30 and "149.90 ohm"^(-1)."cm"^(2)."g-equiv"^(-1) respectively. If lambda^(@) value of Cl^(-) ion is "76.34 ohm"^(-1)."cm"^(2)."g - equiv"^(-1) , find the value of lambda_(I^(-))^(@) .

The value of Lambda^(@) of ClCH_(2)COONa, NaCl and HCl solutions are 224, 38.2 and "203 ohm"^(-1)."cm."^(2)g-equiv"^(-1) respectively. Calculate the value of Lambda^(@) of aqueous solution of ClCH_(2)COOH .

At 25^(@) C, at infinite dilution, the molar conductivity of HCl, NaCl and CH_3COONa are 426.2, 126.5 and 91.0 ohm^(1)cm^2mol^(-1) respectively. Calculate molar conductivity of CH_3COOH at infinite dilution.

At infinite dilution, molar conductivities of HCl, NaCl and CH_(3)COONa solution are 426.2, 126.5 and 91.0 " ohm"^(-1)."cm"^(2)."mol"^(-1) respectively. On the basic of these values, determine the molar conductivity of CH_(3)COOH solution at infinite dilution.

The molar ionic conductances of Al(3+) and SO_(5)^(2-) ions in an infinitely dilute solution of Al_(2)(SO_(4))_(3) are 189 and "160 ohm"^(-1)."cm"^(2)."mol"^(-1), respectively. Determine Lambda^(@) and Lambda_(m)^(@) of Al_(2)(SO_(4))_(3) solution.

Write down Kohlrausch's law of independent migration of ions. Find out the molar conductivity of ammonium hydroxide at infinite dilution (^^_m^@) at 298K, given that ^^_m^@ vales for NH_4Cl , NaCl and NaOH are 149, 126 and 248 S cm^2 mol^-1 respectively at 298K.

CHHAYA PUBLICATION-ELECTROCHEMISTRY-SOLVED NCERT TEXTBOOK PROBLEMS (NCERT INTEXT QUESTIONS)
  1. The standard electrode potential of Daniell cell is 1.1V. Calculate th...

    Text Solution

    |

  2. Calculate the potential of hydrogen electrode in contact with a soluti...

    Text Solution

    |

  3. Calculate EMF of the cell in which the given reaction occurs : Ni(s)...

    Text Solution

    |

  4. The cell in which the following reaction takes place : 2Fe^(3+)(aq)+2I...

    Text Solution

    |

  5. Resistance of a conductivity cell filled with "0.1 mol.L"^(-1)KCl solu...

    Text Solution

    |

  6. The electrical resistance of a column of "0.5 mol.L"^(-1) NaOH solutio...

    Text Solution

    |

  7. The molar conductivity of KCl solution at different concentration at 2...

    Text Solution

    |

  8. Calculate Lambda(m)^(@) for CaCl(2) and MgSO(4) from the data given in...

    Text Solution

    |

  9. Lambda(m)^(@) for NaCl, HCl and NaAc are 126.4, 425.9 and "91 S.cm"^(2...

    Text Solution

    |

  10. The conductivity of "0.001028 mol.L"^(-1) acetic acid is 4.95xx10^(-5)...

    Text Solution

    |

  11. Why does the conductivity of a solution decrease with dilution?

    Text Solution

    |

  12. Suggest a way to determine the Lambda(m)^(@) value of water.

    Text Solution

    |

  13. Molar conductivity of "0.025 mol.L"^(-1) methanoic acid is "46 S.cm"^(...

    Text Solution

    |

  14. A solution of CuSO(4) is electrolysed for 10 minutes with a current of...

    Text Solution

    |

  15. If a current of 0.5A flows through a metallic wire for 2h, then how ma...

    Text Solution

    |

  16. Suggest a list of metlas extracted electrolytically.

    Text Solution

    |

  17. For Cr(2)O(7)^(2-)+14H^(+)+6e rarr 2Cr^(3+)+7H(2)O, what is the quanti...

    Text Solution

    |

  18. Write the chemistry of recharging the lead storage battery highlightin...

    Text Solution

    |

  19. Suggest two materials other than hydrogen that can be used as fuels in...

    Text Solution

    |

  20. Explain how rusting or iron is envisaged as setting up of an electroch...

    Text Solution

    |