The molar conductivities at infinite dilution of barium chlo

Question

The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are 280, 860 and 426 S cm^(2) mol^(-1) respectively. The molar conductivity at infinite dilution of barium sulphate is _________ S cm^(2) mol^(-1). (Round off to the Nearest Integer ).

DivineJEE · Accepted Answer

From Kohlrausch's lawLambda _m^infinity (BaSO_4) = lambda _m^infinity (Ba^2 + ) + lambda _m^infinity (SO_4^2 - )Lambda _m^infinity (BaSO_4) = Lambda _m^infinity (BaCl_2) + Lambda _m^infinity (H_2SO_4) - 2Lambda _m^infinity (HCl) = 280 + 860 - 2(426) = 288 S cm^(2) mol^(-1)

Explanation

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