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JEE Main Chemistry question

ChemistryEquilibriumJEE Main

In the hydrolysis of borax, Na_2B_4O_7 + 7H_2O \rightarrow 2Na[B(OH)_4] + 2B(OH)_3, the products formed are to be neutralized by HCl. The number of moles of HCl required per mole of borax hydrolysed is.......

Answer: 2

Solution

Each mole of the basic produced needs exactly one mole of HCl to neutralise it: Na[B(OH)_4] + HCl \rightarrow NaCl + B(OH)_3 + H_2O; the

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Question ID VK-138445