Showing posts with label F5C1. Show all posts
Showing posts with label F5C1. Show all posts
Collision Theory
Experiment I (zinc powder + hydrochloric acid)
Experiment II (zinc granules + hydrochloric acid)
1) Rate of reaction of experiment I is higher than experiment II
2) Exp I using zinc powder has a smaller size of zinc compare to Exp II
3) Smaller size of zinc has larger total surface area in Exp I.
4) Frequency of collision between zinc and hydrogen ion higher in Exp I
Experiment II (zinc granules + hydrochloric acid)
1) Rate of reaction of experiment I is higher than experiment II
2) Exp I using zinc powder has a smaller size of zinc compare to Exp II
3) Smaller size of zinc has larger total surface area in Exp I.
4) Frequency of collision between zinc and hydrogen ion higher in Exp I
5) Frequency of effective collision between zinc and hydrogen ion higher in Exp I.
Rate of reaction
Rate of reaction = change in a selected quantity / time taken
Rate of reaction increases when
- An increase in the total surface area of a solid reactant (smaller size of the reactant)
- An increase in the concentration of a reactant
- An increase in the temperature
- A catalyst (positive) used.
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