Surface Area and Rate of Reaction | GCSE Chemistry
Increasing the surface area of a solid reactant increases the frequency of collisions.
How does the surface area to volume ratio change as a solid is broken into smaller pieces?
What is Surface Area and Rate of Reaction | GCSE Chemistry?
"The effect of the physical size of solid reactants on the speed of a chemical reaction."
Increasing the concentration of reactants increases the rate because particles...
Why does a powder react faster than a single large lump of the same mass?
How does a catalyst increase the rate of reaction?
Area vs Rate
Breaking a solid into smaller pieces increases its total surface area.
A higher surface area to volume ratio means more particles are exposed.
More frequent successful collisions occur every second.
Common experiment: Marble chips (Calcium Carbonate) reacting with HCl.
Practical Point: Use a gas syringe or a balance to measure the rate of gas production in these experiments.
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