🧴Concentration vs Rate of reaction⏱️
Concentration and rate of reaction are linked but distinct: one is a state, the other a speed.
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🧴Concentration
- ✓Amount of solute per unit volume
- ✓A snapshot quantity at a moment
- ✓Measured in mol/L
- ✓Higher value means more particles present
- ✓Affects how often collisions occur
⏱️Rate of reaction
- ✓How fast reactants turn into products
- ✓Measured per unit time
- ✓Expressed as change in concentration over time
- ✓Higher value means a faster reaction
- ✓Affected by concentration, temperature and catalysts
Verdict
Concentration is how much is present; rate of reaction is how fast change happens. Raising concentration usually raises the rate by causing more frequent collisions.
Frequently asked
How does concentration affect rate?+
More concentrated reactants collide more often, so the reaction generally goes faster.
What units does rate use?+
Rate is usually expressed as change in concentration per unit time, such as mol/L per second.
Is concentration the only factor in rate?+
No. Temperature, surface area and catalysts also affect the rate of reaction.
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