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lambda(ClCH(2)COONa)=224 "ohm"^(-1) cm^(...

`lambda_(ClCH_(2)COONa)=224 "ohm"^(-1) cm^(2) " gm eq"^(-1)`,
`lambda_(NaCl)=38.2 "ohm"^(-1) "cm"^(2) gm eq"^(-1)`.
`lambda_(HCl)=203 "ohm"^(-1) cm^(2) "gm eq"^(-1)`.
What is the value of `lambda_(ClCH_(2)COOH)` ?

A

`288.5 ohm^(-1) cm^(2) g eq^(-1)`

B

`289. 5 ohm^(-1) cm^(2) g eq^(-1)`

C

`388.8 ohm^(-1) cm^(2) g eq^(-1)`

D

`59.5 ohm^(-1) cm^(2) g eq^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Cl CH_(2) COONa + HCl to Cl CH_(2) COOH + NaCl`
`Lambda_(ClCH_(2) COONa) + Lambda_(HCl) = Lambda_(Cl CH_(2) COOH) + Lambda_(NaCl)`
`224 + 203 = Lambda_(ClCH_(2) COOH) + 38.2`
`Lambda_(ClCH_(2) COOH) = 427-38.2`
`=388.8 ohm^(-1) cm^(2) g eq^(-1)`
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