5g of a sample containing (NH4)2SO4 and inert impurity (x) was boiled with excess of NaOH and NH3 so produced was absorbed in 200 ml of 0.5 M H2SO4 solution in another vessel. The unreacted H2SO4 required 400 ml of 0.4 M solution of NaOH for exact neutralisation. Calculate weight % of nitrogen in given sample
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no.of equivalents Ko equate kar ke
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