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Question
Boric acid is an acid because its molecule ______.
Options
contains replaceable H+ ion.
gives up a proton.
accepts OH– from water releasing proton.
combines with proton from water molecule.
Solution
Boric acid is an acid because its molecule accepts OH– from water releasing proton.
Explanation:
Because of the small size of boron atom and presence of only six electrons in its valence shell, B(OH)3 accepts a pair of electrons from OH– ion of H2O, releasing a proton.
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