Question

In: Chemistry

Indicate whether each of the following compounds will gave an acidic, basic or neutral solution when...


Indicate whether each of the following compounds will gave an acidic, basic or neutral solution when dissolved in water.

Clear All
ammonium bromide
barium cyanide
potassium chloride
potassium bromide
The pH will be less than 7.
The pH will be approximately equal to 7.
The pH will be greater than 7.

Solutions

Expert Solution

The aqueous solution of a salt of strong acid and a strong base will be approximately equal to 7.

The aqueous solution of a salt of strong acid and a weak base will be less than 7.

The aqueous solution of a salt of a weak acid and a strong base is greater than 7.

(1)

Ammonium bromide is the salt of strong acid hydrobromic acid(HBr) and weak base ammonium hydroxide(NH4OH).

Thus, the pH of the ammonium bromide solution is less than 7.

(2)

Barium cyanide is the salt of weak acid HCN and strong base barium hydroxide[Ba(OH)2].

Thus, the pH of the Barium cyanide solution is greater than 7.

(3)

Potassium chloride is the salt of strong acid hydrochloric acid(HCl) and strong base potassium hydroxide(KOH).

Thus, the pH of the Potassium chloride solution will be approximately equal to 7.

(4)

Potassium bromide is the salt of strong acid hydrobromic acid(HBr) and strong base potassium hydroxide(KOH).

Thus, the pH of the Potassium bromide solution will be approximately equal to 7.


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