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As the dilution of an electrolyte increa...

As the dilution of an electrolyte increases

A

Sepcific conductance decreases

B

Molar conductance decreases

C

Resistance increases

D

No change takes place in conductance

Text Solution

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The correct Answer is:
A
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Number of statement(s) that is/are correct : (a) On increasing temperature, pH of pure water decreases On increasing temperature, pOH of pure water decreases (c) On increasing dilution, dissociation of weak electrolyte increases (d) pH of 10^(-7) M NaOH (aq) is 7 at 25^(@)C . (e) At equivalence point (during titration of acid ad base) solution must be neutral. (f) Generally, pH of buffer solution does not change on dilution. (g) pH of salt of weak acid and weak base depends on concentration of salt.

Dilution of an electrolyte helps in increasing its electrical conductivity. But it has an adverse effect as well. Discuss.

Knowledge Check

  • Electrolytes when dissolved in water dissociate into their constituent ions. The degree of dissociation of an electrolyte increases with

    A
    Increasing the concentration of electrolyte
    B
    Decreasing the concentration of electrolyte
    C
    Decreasing temperature
    D
    Presence of a substance yielding a common ion

  • Electrolyte when dissolved in water dissociate into their constituent ions. The degree of dissociation of an electrolyte increases with

    A
    Increasing concentration of the electrolyte
    B
    Decreasing concentration of the electrolyte
    C
    Decreasing temperature
    D
    Presence of a substance yielding a common ionsely proportional to the concentration of the electrolyte

  • Assertion : Molar conductance of an electrolyte increases upon dilution. Reason : Ions move faster in dilute solution.

    A
    If both assertion and reason are correct and reason is correct explanation for assertion.
    B
    If both assertion and reason are correct but reason is not correct explanation for assertion.
    C
    If assertion is correct but reason is incorrect.
    D
    If assertion and reason both are incorrect.

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    The precipitation power of an electrolyte increases with

    Assertion Molar conductance of an electrolyte increases with dilution Reason Ions move fast in dilute solutions.

    Statement-1: Molar conductance of any electrolyte increases with dilution. Statement-2: With dilution number of ions per mL of the solution decreases.

    Assertion (A): Conductivity of an electrolyte increases with decrease in concentration. Reason (R ): Number of ions per unit volume decreases on dilution.

    Assertion. Degree of ionization of weak electrolyte increases with dilution. Reason. Degree of ionization is inversely proportional to molar concentration.

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