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2. Electrochemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry2. Electrochemistry1 Mark
MCQ
For a strong electrolyte, a plot of molar conductivity against (concentration) ${ }^{1 / 2}$ is a straight line, with a negative slope, the correct unit for the slope is
  • ✓
    $\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}^{1 / 2}$
  • B
    $\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-1} \mathrm{~L}^{1 / 2}$
  • C
    $\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}$
  • D
    $\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}^{-1 / 2}$
✓

Answer

Correct option: A.
$\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}^{1 / 2}$
a
$\Lambda_{\mathrm{m}}=\Lambda_{\mathrm{m}}^{\circ}-\mathrm{A} \sqrt{\mathrm{C}}$

Units of $\mathrm{A} \sqrt{\mathrm{C}}=\mathrm{S} \mathrm{cm}^2 \mathrm{~mole}^{-1}$

Uits of $\mathrm{A}=\mathrm{S} \mathrm{cm}^2 \mathrm{~mole}^{-3 / 2} \mathrm{~L}^{1 / 2}$

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