Chemistry

Question Analysis
This question involves identifying the solute that depends on hydration for dissolution in water. The main focus is on linking hydration to ionic solutes.

Key Concept Explanation
Hydration is the process where water molecules surround and interact with charged particles (ions).
Ionic solutes like NaCl dissociate into positive (Na⁺) and negative (Cl⁻) ions in water.
Water molecules are polar—their partially negative oxygen atoms attract Na⁺ ions, and partially positive hydrogen atoms attract Cl⁻ ions—forming a hydration shell around each ion.

Step-by-Step Solution
1. Recall that hydration involves water molecules interacting with ions.
2. Analyze each option:
A: CO₂ dissolves in water via dipole-dipole interactions, not hydration (it does...