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Bronsted Lowry Theory

Determine the...

Question

Determine the conjugate acid/base pair :

A

{N a}^{+} / {C l}^{-}

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B

H C l / H^{+}

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C

H_{2} C O_{3} / C O_{3}^{2 -}

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D

N H_{3} / N H_{4}^{+}

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E

K^{+} / O H^{-}

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Solution

The correct option is D $N H_{3} / N H_{4}^{+}$
$N H_{3} / N H_{4}^{+}$ represents the conjugate acid base pair.

$N H_{3} + H^{+} \to N H_{4}^{+}$

The conjugate acid-base pair differs by one proton only.

Hence the correct option is D.

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Similar questions

Q. In the reaction

N H_{3} + H_{2} O \to N H_{4}^{+} + O H^{-}

, the conjugate acid-base pair is:

Q. In the reaction,

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

, the conjugate acid - base pair is:

Q. From the following reactions identify each of an Arrhenius acid or base, Bronsted-Lowry acid or base, or Lewis acid or base.
(A)

N a O H

N a O H \to {N a}^{+} + {O H}^{-}

H C l

H C l \to H^{+} + {C l}^{-}

N H_{3}

N H_{3} + H^{+} \to N H_{4}^{+}

N H_{4}^{+}

N H_{4}^{+} \to N H_{3} + H^{+}

{(C H_{3})}_{3} N :

{(C H_{3})}_{3} N : + B F_{3} \to {(C H_{3})}_{3} N : B F_{3}

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. Identify the conjugate acids and bases in the following equation:

N H_{3} + H_{2} O ⇌ N H_{4}^{+} + O H^{-}

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