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How many of the following can dissolve in aqueous HCl as well as in NaOH solution to liberate `H_(2)`? `B,Al,B_(2)H_(6),B_(2)O_(3),NaAlH_(4),Al_(2)O_(3),AlCl_(3),BF_(3)` |
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Answer» Correct Answer - 3 `Al+3HCltoAlCl_(3)+((3)/(2))H_(2)uarr,Al+NaOH+H_(2)OrarrNaAlO_(2)+((3)/(2))H_(2)uarr` `B_(2)H_(6)+6HClto3BCl_(3)+6H_(2)uarr,B_(2)H_(6)+6H_(2)Ooverset(NaOH)toH_(3)BO_(3)+6H_(2)uarr` `NaAlH_(4)+4HCltoNaCl+AlCl_(3)+4H_(2)uarr,NaAlH_(4)` `underset("excess")overset(NaOH)toNaAlO_(2)(aq)+4H_(2)uarr+2H_(2)O` Others fail to do so, |
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