An aqueous solution of HCl with pH 1.0 is diluted by adding equal volume of water (ignoring dissociation of water). The…
Ionic Equilibrium · Class 11 · JEE Main Previous Year Question
An aqueous solution of HCl with pH 1.0 is diluted by adding equal volume of water (ignoring dissociation of water). The pH of HCl solution would (Given ):
- a
reduce to 0.5
- b✓
increase to 1.3
- c
remain same
- d
increase to 2
increase to 1.3
Step 1: Find initial concentration
Step 2: Effect of dilution
Adding equal volume of water → concentration becomes half:
Step 3: Calculate new pH
Answer: (b) increase to 1.3
Note: Dilution of an acid always increases pH (becomes less acidic).
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