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(i) Define specific and molar conductivi...

(i) Define specific and molar conductivity and give relation between them.
(ii) Calculate molar conductance of acetic acid at infinite dilution `(^^_(m)^(@))`. If molar conductance at infinite dilution of NaCl, HCl and `CH_(3)COONa` are 126.4, 426.1 and `91.0ohm^(-1)cm^(2)mol^(-1)` respectively.

Text Solution

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(i) Specific conductivity. It is the conductance of loc solution of the electrolyte. It is denoted by K.
Molar conductivity. It is the conducting power of all the ions present in a solution containing 1 mole of the electrolyte. It is denoted by `^^_(m)`
`^^_(m)=(kxx1000)/("Molarity")`
(ii) `^^_(m)^(@)(CH_(3)COOH)=^^_(m)^(@)(CH_(3)COONa)+^^_(m)^(@)(HCl)-^^_(m)^(oo)(NaCl)`
`=91+426.1-126.4`
`=390.7omh^(-1)cm^(2)mol^(-1)`
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