Home
Class 12
CHEMISTRY
Molar conductance of 1M solution of weak...

Molar conductance of 1M solution of weak acid HA is 20 `ohm^(-1) cm^(2) mol^(-1)`. Find % dissocation of HA:
`(^^_(m)^(o)(H^(+)) =350 S cm^(2) mol^(-1)),(^^_(m)^(o)(A^(-)) =50 S cm^(2) mol^(-1))`

Text Solution

Verified by Experts

The correct Answer is:
5
`^^_(m)^(o) (HA) = 350 +50 = 400`
`alpha =(^^_(m)^(C))/(^^_(m)^(o)) xx 100 = (20)/(400) xx100 = 5%`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    ALLEN|Exercise Part (II) EXERCISE-01|44 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE-02|35 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise COMPREHENSION TYPE|18 Videos

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise ORGANIC CHEMISTRY|472 Videos

  • HYDROCARBON

    ALLEN|Exercise MCQ|15 Videos

Similar Questions

Explore conceptually related problems

Conductivity of an aqueous solution of 0.1M HX (a weak mono-protic acid) is 5 xx 10^(-4) Sm^(-1) Given: ^^_(m)^(oo) [H^(+)] = 0.04 Sm^(2) mol^(-1): ^^_(m)^(oo) [X^(-)] = 0.01 Sm^(2)mol^(-1) Find pK_(a)[HX]

Molar conductivity of aqueous solution of HA is 200Scm^(2)mol^(-1),pH of this solution is 4 Calculate the value of pK_(a)(HA) at 25^(@)C . Given ^^_(M)^(oo)(NaA)=100scm^(2)mol^(-1), ^^_(M)^(oo)(HCl)=425Scm^(2)mol^(-1), ^^_(M)^(oo)(NaCl)=125 Scm^(2)mol^(-1)

Molar conductivity of aqueous solution of HA is 200Scm^(2)mol^(-1),pH of this solution is 4 Calculate the value of pK_(a)(HA) at 25^(@)C . Given ^^_(M)^(oo)(NaA)=100scm^(2)mol^(-1), ^^_(M)^(oo)(HCl)=425Scm^(2)mol^(-1), ^^_(M)^(oo)(NaCl)=125 Scm^(2)mol^(-1)

Conductivity of 2.5xx10^(-4) M methanoic acid is 5.25xx10^(-5)S com^(-1) . Calculate its molar conductivity and degree of dissociation. "Given ":lamda^(0)(H^(+))=349.5 S cm^(2) mol^(-1) and lamda^(0)(HCOO^(-))=50.5 S cm^(2) mol^(-1).

Calculate degree of dissociation of 0.02 M acetic acid at 298 K given that mho_(m)(CH_(3)COOH)=17.37 cm^(2) mol^(-1),lambda_(m)^(@)(H+)=345.8 S cm^(2) mol^(-1), lambda_(m)^(@)(CH_(3)COO^(-))=40.2 Scm^(2) mol^(-1)

Calculate the degree of dissociation (alpha) of acetic acid if its molar conductivity (^^_(m)) is 39.05 S cm^(2) mol^(-1) Given lamda^(@) (H^(+)) = 349.6 cm^(2) mol^(-1) and lamda^(2) (CH_(3)COO^(-)) = 40.9 S cm^(2) mol^(-1)

At 25^(@)C molar conductance of 0.1 molar aqueous solution of ferrous hydroxide is 9.54 ohm^(-1) cm^(2) mol^(-1) and at infinite dilution its molar conductance is 238 ohm^(-1) cm^(2) mol^(-1) . The percentage degree of ionisation of ferrous ydroxide at the same concentration and temperature is

At 25^(@)C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm^(-1) cm^(2) mol^(-1) and at infinte dilution its molar conductance is 238 ohm^(-1) cm^(2) mol^(-1) The degree of ionisation of ammonium hydroxide at the same concentration and termperature is

The molar conductivity of 0.025 mol L^(-1) methanoic acid is 46.1 S cm^(2) mol^(-1) . Its degree of dissociation (alpha) and dissociation constant. Given lambda^(@)(H^(+))=349.6 S cm^(-1) and lambda^(@)(HCOO^(-)) = 54.6 S cm^(2) mol^(-1) .

Calculate the degree of dissociation (alpha) of acetic acid if its molar conductivity is 39.05 Scm^(2)mol^(-1) . Given lamda^(@)(H^(+))=349.6S" "cm^(2)mol^(-1) and lamda^(@)(CH_(3)CO O^(-))=40.9" S "cm^(2)mol^(-1) .

ALLEN-ELECTROCHEMISTRY-INTEGER TYPE
  1. How much charge is present on 1 mole of Cu^(+2) ion in faraday. (1 Far...

    Text Solution

    |

  2. Total charge in faraday present in 54 gm of Al^(3+) ion.

    Text Solution

    |

  3. For an element 'X' the process of oxidation is: X(2)O(4)^(-2) rarr N...

    Text Solution

    |

  4. Consider a Galvenic cell, Zn(s) |Zn^(2+) (0.1M) ||Cu^(2+) (0.1M)|Cu(...

    Text Solution

    |

  5. How much charge (in F) must flow through solution during electrolysis ...

    Text Solution

    |

  6. Emf of a cell corresponding to the reaction:- Zn(s) +2H^(+) (aq) rar...

    Text Solution

    |

  7. A disposable galvanic cell Zn|Zn^(2+)||Sn^(2+)|SN is produced using 1....

    Text Solution

    |

  8. The specific conductance (k)of a 0.1M NaOH solution is 0.0221 S cm^(-1...

    Text Solution

    |

  9. For any sparingly soluble salt [M(NH(3))(4)Br(2)] H(2)PO(2) Given: l...

    Text Solution

    |

  10. An alloy of Pb-Ag weighing 54 mg was dissolved in desired amount of HN...

    Text Solution

    |

  11. A solution contains A^(+) and B^(+) in such a concentration that both ...

    Text Solution

    |

  12. An equeous solution of Na(2)SO(4) was electrolysed for 10 min. 82 ml o...

    Text Solution

    |

  13. At 298K the standard free energy of formation of H(2)O(l) is -256.5 kJ...

    Text Solution

    |

  14. Suppose the equilibrium constant for the reaction, 3M^(3+) rarr 2M^(...

    Text Solution

    |

  15. When a metal chloride MCI is dissolced in a large excess of ammonia, p...

    Text Solution

    |

  16. Molar conductance of 1M solution of weak acid HA is 20 ohm^(-1) cm^(2)...

    Text Solution

    |

  17. While the discharging of a lead storage battery following reaction tak...

    Text Solution

    |

  18. Conductivity of an aqueous solution of 0.1M HX (a weak mono-protic aci...

    Text Solution

    |