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Conductivity decreases but molar conduct...

Conductivity decreases but molar conductivity increases with ________ in concentration.

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increase
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Molar conductivity decreases with decrease in concentration

Read the given passage and answer the questions number that follow : Molar conductivity increases with decrease in concentration. This is because the total volume, V, of solution containing one mole of electrolyte also increases. It has been found that decrease in K on dilution of a solution is more than compensated by increase in its volume. Physically, it means that at a given concentration, Am can be defined as the conductance of the electrolytic solution kept between the electrodes of a conductivity cell at unit distance but having area of cross-section large enough to accommodate sufficient volume of solution that contains one mole of the electrolyte. When concentration approaches zero, the molar conductivity is known as limiting molar conductivity and is represented by the symbol Am The variation in Lambda_(m) with concentration is different for strong and weak electrolytes. Why does molar conductivity increase with decrease in concentration ?

Knowledge Check

  • Unit of molar conductivity are :

    A
    `Ohm^(-1)m^(2)mol^(-1)`
    B
    `ohmm^(2)mol^(-1)`
    C
    `ohm^(-1)m^(2)mol^(-1)`
    D
    `ohm^(-2)mol^(-1)m^(2)`

  • The units of molar conductivity are :

    A
    `ohm^(-1)cm^(-2) mol^(-1)`
    B
    `ohm^(-2)cm mol^(-2)`
    C
    `ohm^(-2)cm^(2) mol^(-1)`
    D
    `ohm^(-1)cm^(2) mol^(-2)`

  • The SI unit of molar conductivity is

    A
    `S cm^(2)"mol"^(-1)`
    B
    `S "dm"^(2)"mol"^(-1)`
    C
    `Sm^(2)`
    D
    `S m^(2) "mol"^(-1)`

    • Similar Questions

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    What are the units of molar conductivity?

    Consider the statements S1 and S2: S1: Conductivity always increases with decrease in the concentration of electrolyte. S2: Molar conductivity always increases with decrease in the concentration of electrolyte. The correct option among the following is:

    The unit of molar conductivity is _______.

    S_(1)to canductivity increases on decreasing concentration of electrolyte S_(2)to molar conductivity increases on decreasing concentration of electrolyte.

    Consider the statements S1 and S2. S1: Conductivity always increase with decrease in the concentration of electrolyte S2: Molar conductivity always increases with decrease in the concentration of clectrolyte. The correct option among the following is:

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