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Q.

The equivalent conductances of two strong electrolytes at infinite dilution in H2O (where ions move freely through a solution) at 250C are given below

λCH3COONa°=91.0 S cm2/equiv;λHCl°=426.2 S cm2 /equiv

 What additional information / quantity one needs to calculate λ° of  an aqueous solution of  acetic acid ? 

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a

λNaCl°

b

λH+°

 

c

λClCH2COOH°

 

d

λCH3COOK°

 

answer is A.

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Detailed Solution

lambda _{C{H_3}COONa}^{eq} + lambda _{HCl}^{eq} = lambda _{C{H_3}CO{O^ - }}^{eq} + lambda _{N{a^ + }}^{eq} + lambda _{{H^ + }}^{eq} + lambda _{C{l^ - }}^{eq} = lambda _{C{H_3}COOH}^{eq} + lambda _{NaCl}^{eq}

 

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