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Orthoboric Acid

Which of the ...

Question

Which of the followings are Lewis acids?
$H_{2} O, {B F}_{3}, H^{+},$ and ${N H}_{4}^{+}$

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Solution

${B F}_{3}, H^{+}$ and ${N H}_{4}^{+}$ are Lewis acids whereas $H_{2} O$ is a lewis base.

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Q. Which of the following are Lewis Acids? Why?
(i) H2O
(ii) BF3
(iii) H+
(iv) NH4+

Q. Find the number of molecules(s)/ion having Lewis acidic property from the following:

H_{2} O, N H_{3}, H^{+}, B F_{3}, A l H_{3}, ¯ C N, ¯ C H_{3}

Q. Classify the following into Lewis acids and Lewis bases:
(a)

H_{2} O

N H_{3}

H^{+}

B F_{3}

A I H_{3}

R O H

C H_{3} N H_{2}

C N^{-}

^{+} C H_{3}

Lewis acids : (c), (d), (e), (i)
Lewis bases : (a), (b), (f), (g), (h)
If true enter 1, else enter 0.

Q. Classify the following species as Lewis acids and Lewis bases.

N H_{3}, B F_{3}, S n C I_{4}, C_{2} H_{5} N H_{2}, C O, N i^{+}

Q. According to Lewis concept

B F_{3}

acts as a Lewis acid, which is:

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