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MHT CET Chemistry question

ChemistrySome Basic Concepts of ChemistryMHT CET

is a tribasic acid and one of its salts is . What volume of 1 NaOH should be added to 12 g (mol. wt. 120) to exactly convert it into ?

Answer: (C)

Solution

NaH₂PO₄ + 2NaOH → Na₃PO₄ + 2H₂O; 12 g is 0.1 mol and needs 0.2 mol NaOH = 200 mL of 1 M, whereas 100 mL supplies only

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Question ID VK-041321