Question
Identify from following the conjugate base of [ Zn ( H _2 O )_4]^ 2+
MHT CET
Chemistry
Ionic Equilibrium
2026
MHT CET 2026 (15 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. [ Zn ( H _2 O )_4]^ 2- \, NH _3
- B. [ Zn ( H _2 O )_3]^ 2-
- C. [ Zn ( H _2 O )_3 OH ]^ +
- D. [ Zn ( H _2 O ) H ]^ 3+
Answer
C. [ Zn ( H _2 O )_3 OH ]^ +
Step-by-step solution
According to the Bronsted-Lowry theory, a conjugate base is formed when an acid loses a proton ( H ^ + ). The given species is [ Zn ( H _2 O )_4]^ 2+ . Removing a proton ( H ^ + ) from one of the coordinated water molecules gives: [ Zn ( H _2 O )_4]^ 2+ [ Zn ( H _2 O )_3( OH )]^ + + H ^ + Thus, the conjugate base is [ Zn ( H _2 O )_3 OH ]^ + . Answer: [ Zn ( H _2 O )_3 OH ]^ +
Related: Chemistry — Ionic Equilibrium · All PYQ Banks