The conductivity of a saturated solution of Ag2C2O4 is 4×10−5 S cm−1 at 25°C. Conductivity of water is 6×10−8 S cm−1. What is the approximate molar conductivity of C2O42− ion at infinite dilution, given molar conductivity of Ag+ ions at infinite dilution is 62 S cm2/mol and KspAg2C2O4=3.2×10−11

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138 S cm2/mol

127 S cm2/mol

76 S cm2/mol

200 S cm2/mol

answer is C.

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Detailed Solution

Ksp=4S3=3.2×10−11⇒S=2×10−4∧0=χ×1000s2×62+x=4×10−5×10002×10−4=20⇒x=76

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