Assuming No Volume Change on Mixing, What Mass of Ammonium

question 62

Multiple Choice

Assuming no volume change on mixing, what mass of ammonium chloride should be added to 250.0 mL of 0.25 M ammonia to produce a solution of pH 10.70? [Kb for ammonia is 1.8 × 10^-5]

• A) 3.7 mg
• B) 120 mg
• C) 40 mg
• D) 30 mg
• E) 80 mg

---

Definitions:

Medical Care

Professional services rendered by healthcare practitioners aimed at maintaining, improving, or diagnosing health issues.

Fidelity

The ethical principle of being faithful and loyal to commitments and obligations, often used in the context of professional conduct and relationships.

Nonmaleficence

A principle in bioethics that obliges healthcare professionals to not intentionally create harm or injury to the patient, either through acts of commission or omission.

Autonomy

The right of individuals to make their own choices and decisions, based on their own values and beliefs, without coercion.