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Determine whether aqueous solutions of the following salts are acidic, basic, or neutral: (a) FeCl3 (b) K2CO3 (c) NH4Br (d) KClO4

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Answer:

FeCl3 - acidic

K2CO3 - basic

NH4Br- acidic

KClO4 - neutral

Explanation:

This question is drawing our attention to solvation.

When a salt is formed from a weak acid and a strong base, then the salt solution will be basic. For instance. K2CO3 is formed from a weak acid H2CO3 and a strong base KOH. A solution of K2CO3 is basic.

Similarly, when a salt is formed from a strong acid and a weak base, the salt is acidic, Eg NH4Br

Lastly, a salt formed from a strong acid and a strong base is found to be neutral in solution.

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