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Effect of dilution on conduction is : Sp...

Effect of dilution on conduction is : Specific conductance increases molar conductance decreases, Specific conductance decreases molar conductance increases, Both increase with dilution, Both decrease with dilution

A

Specific conductance increases molar conductance decreases

B

Specific conductance decreases molar conducctance increases

C

Both increase with dilution

D

Both decrease with dilution

Text Solution

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The correct Answer is:
B
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Why does the conductivity of a solution decreases with dilution?

Which of the following is/are true a.Specific conductance denotes conductances of 1cm^(3) of a substance b. Specific conductance as well as molar conductance of a solution of an electrolyte increases upon dilution. c. Limiting molar conductivity of a weak electrolyte cannot be determined by extrapolation of the plot of lamda_(m) against sqrt(c) d. Conductance of metals is by movement of free electrons

Knowledge Check

  • The effect of temperature increases, : electrolytic conduction decreases , Metallic conduction increases, metallic conduction decreases, Electrolytic conduction increases, metallic conduction decreases, Both electrolytic and metallic conduction decreases, Both electrolytic and metalllic conduction increases

    A
    Metallic conduction increases, metallic conduction decreases
    B
    Electrolytic conduction increases, metallic conduction decreases
    C
    Both electrolytic and metallic conduction decreases
    D
    Both electrolytic and metalllic conduction increases

  • The SI unit of molar conductivity is

    A
    `S m^(3) mol^(-1)`
    B
    `S m mol^(-1)`
    C
    `S m mol^(-2)`
    D
    `S m^(2) mol^(-1)`

  • Assertion: Specific conductance decreases with dilution whereas equivalent conductance increases. Reason: On dilution, number of ions per millilitre decreases but total number of ions increases considerably.

    A
    If both (A) and (R) are correct and (R) is the correct explanation of (A).
    B
    If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
    C
    If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
    D
    If both (A) and (R) are incorrect.

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    How is specific conductivity related to resistivity?

    The molar conductivity of an electrolyte increases as Dilution increases Temperature decreases Dilution decreases None of these

    Assertion : Equivalent conductance increase with dilution for an electrolyte solution. Reason: The number of ions per litre of electrolyte increases with dilution.

    Electrolytic conduction differs from metallic conduction in the case of electrolytic conduction : The resistance increases with increasing temperature, The resistance decreases with increasing temperature, The flow of current does not generate heat, The resistance is independent of the length of the conductance

    The electrical conductivity of a pure silicon atom can be increased by

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