🧪Strong acid vs Weak acid🧪
The strength of an acid is about how fully it ionizes, not how concentrated it is. This distinction shapes pH, conductivity and reaction speed.
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🧪Strong acid
- ✓Ionizes 100% in water
- ✓Very low pH at same concentration
- ✓High electrical conductivity
- ✓Reaction essentially irreversible
- ✓Examples: HCl, HNO3, H2SO4
🧪Weak acid
- ✓Ionizes only partially in water
- ✓Higher pH than strong acid at same concentration
- ✓Lower conductivity
- ✓Establishes an equilibrium (reversible)
- ✓Examples: acetic acid, carbonic acid, HF
Verdict
Strong acids dissociate fully and weak acids set up an equilibrium. Strength differs from concentration: a dilute strong acid can be weaker in effect than a concentrated weak one.
Frequently asked
Does strong mean concentrated?+
No. Strength refers to degree of ionization; concentration refers to amount per volume. They are independent properties.
Why do weak acids have a Ka value?+
Because they only partially ionize, an equilibrium constant Ka quantifies how far the dissociation proceeds.
Which conducts electricity better?+
A strong acid, because full ionization provides far more free ions to carry current.
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