MCQ
The hybridization of the central atom will change when
- A$NH_3$ combines with $H^+$
- B$H_3BO_3$ combines with $OH^-$
- C$NH_3$ forms $NH_2^-$
- D$H_2O$ combines with $H^+$
$\underset{s{{p}^{3}}}{\mathop{2N{{H}_{3}}}}\,\rightleftarrows \underset{s{{p}^{3}}}{\mathop{NH_{2}^{-}}}\,+\underset{s{{p}^{3}}}{\mathop{NH_{4}^{+}}}\,$
$\underset{s{{p}^{2}}}{\mathop{{{H}_{3}}B{{O}_{3}}}}\,+O{{H}^{-}}\to \underset{s{{p}^{3}}}{\mathop{{{[B{{(OH)}_{4}}]}^{-}}}}\,$
$\underset{s{{p}^{3}}}{\mathop{{{H}_{2}}O}}\,+{{H}^{+}}\rightleftarrows \underset{s{{p}^{3}}}{\mathop{{{H}_{3}}{{O}^{+}}}}\,$
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$(A)$ Ice floats in water.
$(B)$ Higher Lewis basicity of primary amines than tertiary amines in aqueous solutions.
$(C)$ Formic acid is more acidic than acetic acid.
$(D)$ Dimerisation of acetic acid in benzene.