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AIIMS 2018 Chemistry Conductivity MCQ Question

Type: MCQ-numerical-Medium-Class 12

0.1 mole, per litre0.1\text{ mole, per litre} solution present in conductivity cell where electrode of 100 cm2100\text{ cm}^2 area placed at 1 cm1\text{ cm} and resistance observe is 5×103 Ohm5 \times 10^3\text{ Ohm}, what is molar conductivity of solution?

A

5×102 S cm2 mole−15 \times 10^2\text{ S cm}^2\text{ mole}^{-1}

B

104 S cm2 mole−110^4\text{ S cm}^2\text{ mole}^{-1}

C

200 S cm2 mole−1200\text{ S cm}^2\text{ mole}^{-1}

D

0.02 S cm2 mole−10.02\text{ S cm}^2\text{ mole}^{-1}

Correct Answer

Option D

Detailed Explanation

Option D is correct because the calculated molar conductivity, Λmo=0.02 S cm2 mole−1\Lambda_m^o = 0.02 \, \text{S cm}^2 \text{ mole}^{-1}, is consistent with the derived values from the specific conductivity formula, indicating a proper understanding of the relationship between conductivity and molar conductivity. Other options are not applicable or do not provide relevant information, as they are marked as N/A, suggesting that they do not pertain to the question or calculations presented. This exercise emphasizes the importance of understanding how specific conductivity relates to molar conductivity, which is crucial in electrochemistry and solution chemistry.

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