What is the molar conductivity of $0.005 \mathrm{M}$ $\mathrm{NaI}$ solution if its conductivity is $6.065…

What is the molar conductivity of $0.005 \mathrm{M}$ $\mathrm{NaI}$ solution if its conductivity is $6.065 \times 10^{-4} \Omega^{-1} \mathrm{~cm}^{-1}$ ?
  1. $121.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$
  2. $115.1 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$
  3. $126.5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$
  4. $131.2 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$

Solution

$\wedge_{\mathrm{m}}=\frac{1000 \mathrm{k}}{\mathrm{c}}$ $=\frac{1000 \times 6.065 \times 10^{-4}}{0.005}=121.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$

Asked in: MHT CET 2023 (13 May Shift 2)

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