To neutralize completely 20 mL of 0.1 M aqueous solution of phosphorous acid ( H 3 PO 3 ) , the volume of 0.1 M aqueous KOH solution required is

Question

To neutralize completely 20 mL of 0.1 M aqueous solution of phosphorous acid ( H 3 ​ PO 3 ​ ) , the volume of 0.1 M aqueous KOH solution required is

TestHub · Accepted Answer

No. of gm equivalents of phosphorous acid = No . of gm equivalents of KOH ​ 20 × 0.1 × 2 ( n = factor ) = 0.1 × V = 0.1 × V ​ V = 0.1 4 ​ = 40 ml

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