What must be the molarity of $BaCl_2$ solution to have molar conductivity $240 \text{ }\Omega^{-1}\text{cm}^2\text{mol}^{-1}$ and conductivity $0.012 \text{ }\Omega^{-1}\text{cm}^{-1}$ at $25 \text{ }^\circ\text{C}$ (in M)?

  • A
    $0.01$
  • B
    $0.02$
  • C
    $0.05$
  • D
    $0.1$

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The molar conductivity of $KCl$ solutions at different concentrations at $298 \ K$ is given below:
$c / mol \ L^{-1}$$\Lambda_m / S \ cm^2 \ mol^{-1}$
$0.000198$$148.61$
$0.000309$$148.29$
$0.000521$$147.81$
$0.000989$$147.09$

Show that a plot of $\Lambda_m$ versus $c^{1/2}$ is a straight line. Determine the values of $\Lambda_m^o$ and $A$ for $KCl$.

What is the $SI$ unit of molar conductivity?

The order of equivalent conductances at infinite dilution for $LiCl$, $NaCl$, and $KCl$ is:

The equivalent conductance of $H_2SO_4$ at infinite dilution is $384 \, \Omega^{-1} \, cm^2 \, eq^{-1}$. If the solution contains $49 \, g$ of $H_2SO_4$ per liter and the specific conductance is $18.4 \, \Omega^{-1} \, cm^{-1}$,calculate the degree of dissociation in percentage.

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What is the conductivity of $0.05 \ M$ $NaOH$ solution having resistance $31.5 \ \Omega$ and cell constant $0.315 \ cm^{-1}$?

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