3 3 2 3 2 2 2 H PO KOH K HPO H O -> By applying standard molarity equation we get, 1 1 3 3 2 2 1 2 ( ) ( ) M V H PO M V KOH n n 2 0.1 20 0.1 1 2 V x x 2 40 V ml . Equivalent Weight & Equivalent Concept
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