A 50 × 10^-4 M Solution of MnSO₄ Is Gradually Made

question 28

Multiple Choice

A 5.0 × 10^-4 M solution of MnSO₄ is gradually made more basic by adding NaOH.At what pH will manganese(II) hydroxide begin to precipitate? The K_sp of Mn(OH) ₂ is 2.0 × 10^-13 and K_w = 1.01 × 10^-14.

• A) 4.60
• B) 9.57
• C) 4.70
• D) 9.30
• E) 9.40

---

Definitions:

Applicator

A tool or device used to apply a substance or prepare a surface, often found in medical or cosmetic applications.

Right to Know

A legal principle that allows individuals to seek information from the government or organizations, particularly regarding environmental hazards or workplace safety.

Medication

A substance used for medical treatment, especially a medicine or drug taken to diagnose, cure, treat, or prevent disease.

Side Effects

Unintended, but fairly mild and common, effects of a medication.