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🧼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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