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Equivalent conductance at infinite dilut...

Equivalent conductance at infinite dilution of `NH_4CI`, NaOH and NaCl are 129.8, 217.4 and 108.45 mho `cm^2` gm equivalent-' respectively.Calculate the equivalent conductance of `HN_4OH` at infinite dilution.

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Form Kohlraushch.s law `lambda_(0) NH_(4) OH = lambda_(NH_(4)Cl)^(0) + [ lambda_(NaCl)^(0)]`
`= 129.8 + ( 217.4- 108.45) = 238.75 Omega^(-) cm^(2) "mol"^(-1)`
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