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Flashcards in Kinetics Deck (7)
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1

What must particles do in order to react

Collide with sufficient energy and the correct orientation

2

Do most collisions result in a reaction

No

3

Define activation energy

The minimum energy that particles must collide with for a reaction to occur

4

What is the effect of increasing temperature on rate of reaction

Increased rate of reaction
Much higher proportion of particles have energy greater than the activation energy

5

What is the effect of increasing concentration/ pressure on rate of reaction

Increased rate of reaction
More particles in a given volume so more frequent collisions so increased rate

6

What is a catalyst

A substance which increases the rate of reaction but is not used up in the reaction

7

How do catalyst work

Provide an alternative reaction pathway
Lowers activation energy so more particles have energy > activation energy
Increased reaction rate