Question

Would you expect an aqueous manganese(VII) oxide solution to have a pH greater or less than 7.0? Justify your answer.

a. Greater than 7.0; it is a strong base
b. Less than 7.0; it is a strong acid
c. Greater than 7.0; it is a weak acid
d. Less than 7.0; it is a weak base

Answer 1

Aqueous manganese(VII) oxide solutions are acidic with a pH value less than 7.0.

Step-by-step explanation:

In general, aqueous solutions of manganese(VII) oxide are acidic because they produce hydronium ions in water. The concentration of hydronium ions in an acidic solution is greater than 1.0 × 10-7 M, resulting in a pH value less than 7. Therefore, the pH of an aqueous manganese(VII) oxide solution would be less than 7.0.