🧼Strong base vs Weak base🧴
The strength of a base is about how completely it ionizes, not how concentrated it is. This shapes pH and reactivity.
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🧼Strong base
- ✓Dissociates completely in water
- ✓High pH at the same concentration
- ✓Releases many hydroxide ions
- ✓Reaction essentially irreversible
- ✓Examples: NaOH, KOH
🧴Weak base
- ✓Dissociates only partially in water
- ✓Lower pH than a strong base at same concentration
- ✓Releases fewer hydroxide ions
- ✓Establishes an equilibrium
- ✓Examples: ammonia, methylamine
Verdict
Strong bases ionize fully and give a high pH; weak bases set up an equilibrium and ionize partially. Strength is independent of concentration.
Frequently asked
Does strong base mean concentrated?+
No. Strength is about degree of ionization, while concentration is amount per volume.
What is the Kb value?+
Kb is the equilibrium constant showing how far a weak base ionizes in water.
Is ammonia a strong or weak base?+
Ammonia is a weak base because it only partially ionizes in water.
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