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27.which has ...

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27.which has more stronger conjugate base H2S OR H2O and why?

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Q. (a) Mention conjugate base of each of the following:

H S^{-}, H_{3} O^{+}, H_{2} {P O}_{4}^{-}, H {S O}_{4}^{-}, H F, {C H}_{3} C O O H, C_{6} H_{5} O H, H C l O_{4}, {N H}_{4}^{+}

(b) Mention the conjugate acid of each of the following:

{O H}^{-}, {C H}_{3} C O O^{-}, {C l}^{-}, {C O}_{3}^{2 -}, H_{2} {P O}_{4}^{-}, {C H}_{3} {N H}_{2}, {C H}_{3} C O O H, {N H}_{2}^{-}

(c) Which of the following behave both as Bronsted acids as well as Bronsted bases?

H_{2} O, H {C O}_{3}^{-}, H_{2} {S O}_{4}, H_{3} {P O}_{4}, H S^{-}, {N H}_{3}

(d) Which is stronger acid in each of the following pairs?

H C l, H I; H_{2} {C O}_{3}, H_{2} {S O}_{4}; H_{2} O, H_{2} S; C_{2} H_{5} O H, C_{6} H_{5} O H

(e) Which is stronger base in each of the following pairs?

{O H}^{-}, {C l}^{-}; {O H}^{-}, {N H}_{2}^{-}; {O H}^{-}, {C H}_{3} C O O^{-}; {C H}_{3} C O O^{-}, {C l}^{-}; {N H}_{3}, {C H}_{3} {N H}_{2}

(f) Classify the following into acids and bases according to Lewis concept:

S^{2 -}, H^{+}, {O H}^{-}, B F_{3}, {N i}^{2 +}, N F_{3}, A l {C l}_{3}, S n {C l}_{4}, {N H}_{3}, {({C H}_{3})}_{2} O

Q. What are the conjugate acid and conjugate base respectively for the following reaction?

H_{2} O + H_{2} O ⟶ H_{3} O^{+} + O H^{-}

Q. Assertion :Tert-Butoxide is a stronger base than

O H^{-}

C_{2} H_{5} O^{-}

ion but is a much poorer nucleophile.

B e c a u s e

Reason: A negatively charged ions is always more powerful nucleophile than its conjugate acid.

Q. Why is phosphorous acid stronger than phosphoric.. Phosphoric has more oh groups so shouldn't it stabilize the negetive O-

and why is ammonia a stronger base than phosphine and others in the group.. N has more Electronegetivity so shouldn't it have less tendency to donate the lone pair

Q. Identify the correct statement(s) for the given reaction.

H C l + H_{2} O \to H_{3} O^{+} + C l^{-}

a) Conjugate base of

H C l

C l^{-}

b) Conjugate acid-base pair is

H_{3} O^{+}

H_{2} O

c) Conjugate base of

H_{2} O

H_{3} O^{+}

d) Conjugate acid-base pair is

H C l

H_{3} O^{+}

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