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Calculate the equivalent conductance of `NH_4OH` at infinite dilution using Kohlrausch law. Given that `Lambda_(0)` values of `NaOH, NaCI and NH_4Cl` are respectively 217.4, 108.9 and `129"ohm"^(-1) cm^(2)`.

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The correct Answer is:
`238 "ohm"^(-1) cm^(2) eq^(-1)`
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