Identify a Lewis acid or Lewis base

1. A.
   $\text{BCl}_3$
2. B.
   $\text{HNO}_3$
3. C.
   $\text{NH}_3$
4. D.
   $\text{HSO}_4^-$

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1. A.
   accept a pair of electron
2. B.
   donate a pair of electron
3. C.
   accept $\text{H}^+$ ions
4. D.
   donate $\text{OH}^-$ ions

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1. A.
   ${BF}_{3}$
2. B.
   ${Cu}^{2 +}$
3. C.
   ${AlCl}_{3}$
4. D.
   $\ {NH}_{3}$

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1. A.
   $\mathrm{BaCl_2}$
2. B.
   KCl
3. C.
   $\mathrm{BeCl_2}$
4. D.
   LiCl

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