NH\(_3\)  +  H\(_3\)O\(^+\) → NH\(_4\)\(^+\) + H\(_2\)O. It may be deduced from the reaction above...

NH\(_3\) + H\(_3\)O\(^+\) → NH\(_4\)\(^+\) + H\(_2\)O. It may be deduced from the reaction above...

Chemistry

JAMB 1993

NH\(_3\) + H\(_3\)O\(^+\) → NH\(_4\)\(^+\) + H\(_2\)O. It may be deduced from the reaction above that?

A. a redox reaction has occurred
B. H₃O⁺ acts as an oxidizing agent
C. H₃O⁺ acts as an acid
D. water acts as an acid

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Correct Answer: Option C

Explanation

In the reaction NH\(_3\) + H\(_3\)O\(^+\), H\(_3\)O\(^+\) acts as an acid, donating a proton (H\(^+\)) to NH\(_3\), which then becomes NH\(_4\)\(^+\).

According to Brønsted-Lowry Acid-Base Theory, an acid is a substance that donates a proton (H\(^+\)), while a base is a substance that accepts a proton.

H\(_3\)O\(^+\) (Hydronium Ion) is formed when a proton (H\(^+\)) is added to a water molecule (H\(_2\)O.).

In the reaction NH\(_3\) + H\(_3\)O\(^+\) → NH\(_4\)\(^+\) + H\(_2\)O, H\(_3\)O\(^+\) donates a proton (H\(^+\)) to NH\(_3\), forming NH\(_4\)\(^+\) and H\(_2\)O.

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