JEE Main 20245 AprilMorning Shift
- Exam
- JEE Main
- Year
- 2024
- Date
- 5 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Electrochemistry
JEE Main 2024 · 5 April · Morning Shift · Chemistry · Electrochemistry
Molar ionic conductivities of divalent cation and anion are (57 ~S...
Molar ionic conductivities of divalent cation and anion are (57 \mathrm{~S} \mathrm{~cm}^2 ) and (73 \mathrm{~S} \mathrm{~cm}^2 ) respectively. The molar conductivity of solution of an electrolyte with the above cation and anion will be :
Options
- A(187 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1})
- B(260 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1})
- C(130 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1})
- D(65 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1})
Correct answer
C. (130 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1})
Step-by-step solution
\begin{aligned} & \Lambda_{\mathrm{C}^{+2}=57 \mathrm{Scm}^2 \mathrm{ mol}^{-1} \\ & \Lambda_{\mathrm{A}^{+2}=73 \mathrm{Scm}^2 \mathrm{ mol}^{-1} \\ & \Lambda_{\text{Solution }}=\lambda_{\mathrm{C}^{+2}+\Lambda_{\mathrm{A}^{-2} \\ & =57+73=130\end{aligned}