Test Index

WAEC Chemistry 2010 Paper

Question : 21

Total: 38

The following substances are normal salts except

Solution:

Concept:

Normal salts form by complete neutralisation and contain neither replaceable

\mathrm{H}^+

nor

\mathrm{OH}^-

Explanation:

Check each salt for replaceable hydrogen ions or hydroxide ions.

\mathrm{Al(NO_3)_3}

\mathrm{FeSO_4}

, and

\mathrm{NaCl}

contain only metal ions and acid anions.

So they are normal salts.

\mathrm{Mg(OH)NO_3}

still contains an

\mathrm{OH}^-

group.

Hence it is a basic salt, not a normal salt.

Answer:

\mathrm{Mg(OH)NO_3}

Go to Question:

Prev Question

Next Question