p-Block elementsHard

Question

On the addition of mineral acid to an aqueous solution of borax, the compound formed is:

Options

A.borodihydride
B.orthoboric acid
C.metaboric acid
D.pyroboric acid

Solution

Na2B4O7 + H2SO4 + 5H2O → Na2SO4 + 4H3BO3

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