2g of base x requires 100ml of 0.4 N acid for complete neutralisation. the equivalent weight of base is​

weight of base x = 2g so, equivalents of base = given weight of base/equivalent weight.= 2g/equivalent weight of base.Normality of 100ml solution of acid = 0.4N so, equivalents of acid = normality × volume of solution in litre = 0.4 × 100/1000 = 0.04 To completely neutralisation, equivalents of acid = equivalents of base.or, 0.04 = 2g/equivalent weight of base or, equivalent weight of base = 2/0.04 = 50g.