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The molar conductances of NaCI, HCI and ...

The molar conductances of `NaCI, HCI` and `CH_3 COONa` at infinite dilution are `12.45, 426. 16` and ` 91 "ohm"^(-1) cm^2 "hol"^(-1)` respectively. The molar conductance of `CH_3COOH` at infinite dilution is .

A

`201 . 28 "ohm"^(-1) cm^2 "mlo"^(-1)`

B

` 698. 28 "ohm"^(-1) cm^(-1) "mlo"^(-1)`

C

` 390.71 "ohm"^(-1) cm^(2) "mol"^(-1) `

D

` 540. 48 "ohm"^(-1) mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
` ^^_m^2 (CH_3COOH) = ^^@ (CH_3COON) + ^^@ (HCI)`
` -^^@ (NaCl)`
` = 19+ 426. 16 - 126. 45 = 390. 71 "ohm"^(-1) cm^2 "mol"^(-1)`.
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A2Z-ELECTROCHEMISTRY-Section D - Chapter End Test
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