The hydrolysis of NH₄CI gives

Correct Answer is : an acidic solution

Correct Answer is : an acidic solution

Test Index

WAEC Chemistry 2012 Paper

Question : 31

Total: 44

_4

CI gives

Solution:

Concept:

\mathrm{NH_4Cl}

is a salt formed from a weak base and a strong acid.

Explanation:

When

\mathrm{NH_4Cl}

dissolves in water, it dissociates into

\mathrm{NH_4^+}

and

\mathrm{Cl^-}

ions.

The

\mathrm{NH_4^+}

ion undergoes hydrolysis with water:

\mathrm{NH_4^+ + H_2O \rightleftharpoons NH_3 + H_3O^+}

This produces hydronium ions,

\mathrm{H_3O^+}

, so the solution contains more

\mathrm{H^+}

than

\mathrm{OH^-}

Therefore, the resulting solution is acidic.

Answer:

A. an acidic solution

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