In Cation-Exchange Resins, What Ion Replaces Ca²⁺ and Mg²⁺ in the Hard

question 90

Multiple Choice

In cation-exchange resins, what ion replaces Ca²⁺ and Mg²⁺ in the hard water that is passed over the resin?

• A) Ba²⁺
• B) K⁺
• C) Li⁺
• D) Na⁺
• E) H⁺

---

Definitions:

Perception Checking

is a communication strategy used to verify the accuracy of one's interpretations of another person's behavior or communication, reducing misunderstandings.

Interpersonal Communication

A distinctive, transactional form of human communication involving mutual influence, usually for the purpose of managing relationships.

Student Union

A student organization present in many universities and colleges dedicated to representing the interests of the student body, often providing services, support, and facilitating activities.

Nonverbal Messages

Types of communication not conveyed through spoken words but through body language, facial expressions, gestures, posture, and other visual cues.