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JEE Main 2004 Chemistry question

ChemistryThe p-Block ElementsJEE Main 2004

To neutralize completely 20 mL of 0.1M aqueous solution of phosphorous acid , the volume of 0.1M aqueous KOH solution required is

Answer: (3)

Solution

Phosphorous acid (structure ) has only two ionisable P–OH hydrogens, so it is dibasic. Moles of $=

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Question ID VK-038363