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aev [14]
3 years ago
5

Some of the following salts are used in detergents and other cleaning materials because they produce basic solutions. Which of t

he following could not be used for this purpose? Write equations to justify your answers.
a. Sodium carbonate
b. Sodium sulfate
c. Ammonium sulfate
d. Sodium phosphate
Chemistry
1 answer:
Ne4ueva [31]3 years ago
3 0

Answer: Sodium sulfate and Ammonium sulfate could not be used for this purpose.

Explanation:

An acidic solution will show a pH in the range of 0 - 6.9. A basic solution show a pH in the range of 7.1 - 14. A neutral solution will show a pH of 7.

A salt is acidic, when it is formed from the combination of strong acid and weak base. A salt is basic, when it is formed from the combination of weak acid and strong base. A salt is neutral, when it is formed from the combination of weak acid and weak base or strong acid and strong base.

a. Sodium carbonate : is formed by the combination of strong base NaOH and a weak acid H_2CO_3[, thus forms a basic solution.

Na_2CO_3\rightarrow 2Na^++CO_3^{2-}

b. Sodium sulfate:  is formed by the combination of strong base NaOH and a strong acid H_2SO_4[, thus forms a neutral solution.

Na_2SO_4\rightarrow 2Na^++SO_4^{2-}

c. Ammonium sulfate:  is formed by the combination of weak base NH_4OH and a strong acid H_2SO_4[, thus forms a acidic solution.

(NH_4)_2SO_4\rightarrow 2NH_4^++SO_4^{2-}

d. Sodium phosphate:  is formed by the combination of strong base NaOH and a weak acid H_3PO_4[, thus forms a basic solution.

Na_3PO_4\rightarrow 3Na^++PO_4^{3-}

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The equation is currently unbalanced, so to balance it out, you have to have the same number of each molecule on each side. It'll look like this: 

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