Chemistrymedium · Past Paper
In the reaction $HCl + H_2O \rightarrow H_3O^+ + Cl^-$, $H_3O^+$ is called:
AHydrogen ion
BHydride ion
CHydronium ion
DHydroxide ion
✓ Correct Answer: C — Hydronium ion
In water, H+ ions do not exist alone; they combine with water molecules to form hydronium ions (H3O+).
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