Question

The conjugate base of \(NH_3\) is

• A. \(NH_4^+\)
• B. \(NH_4OH\)
• C. \(NH_2^-\)
• D. \(NH_2\)

Hint:

A conjugate base is obtained by removing one \(H^+\) from an acid. A conjugate acid is obtained by adding one \(H^+\) to a base.

Answer 1

The Correct Option is C

Step 1: Apply Brønsted-Lowry conjugate definition.
Conjugate base = acid minus one proton. NH₃ – H⁺ → NH₂⁻. Other options: NH₄⁺ is conjugate acid, NH₄OH is a salt, NH₂ is neutral radical.

Step 2: Final Answer:
NH₂⁻ (option 3).