MCQ
For a strong electrolyte, a plot of molar conductivity against $(\text { concentration })^{1 / 2}$ is a straight line, with a negative slope, the correct unit for the slope is
  • A
    $S cm ^2 mol^{-3 / 2} L^{1 / 2}$
  • B
    $S cm ^2 mol^{-1} L^{1 / 2}$
  • C
    $S cm ^2 mol^{-3 / 2} L$
  • D
    $S cm ^2 mol^{-3 / 2} L^{-1 / 2}$

Answer

$\Lambda_{m}=\Lambda_{m}^{\circ}-A \sqrt{C} $Units of $A \sqrt{ C }= S cm ^2 mole^{-1}$ Uits of $A = S cm ^2 mole^{-3 / 2} L^{1 / 2}$

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