Rates of Reaction

keekz97xx
Mind Map by keekz97xx, updated more than 1 year ago
keekz97xx
Created by keekz97xx over 6 years ago
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Mind Map on Rates of Reaction, created by keekz97xx on 09/02/2013.

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Rates of Reaction
1 rate measurements
1.1 Different reactions can happen at different rates. Reactions that happen slowly have a low rate of reaction. Reactions that happen quickly have a high rate of reaction
2 reactants and products
2.1 ways to measure the rate of a reaction
2.1.1 Measure the rate at which a reactant is used up
2.1.2 Measure the rate at which a product is formed
3 things to measure
3.1 The mass of a substance - solid, liquid or gas - is measured with a balance
3.2 The volume of a gas is usually measured with a gas syringe, or sometimes an upside down measuring cylinder or burette
4 factors affecting the rate
4.1 The rate of a reaction increases if:
4.1.1 The temperature is increased
4.1.2 The concentration of a dissolved reactant is increased
4.1.3 The pressure of a reacting gas is increased
4.1.4 Solid reactants are broken into smaller pieces
4.1.5 A catalyst is used
5 collisions
5.1 For a chemical reaction to occur, the reactant particles must collide. Collisions with too little energy do not produce a reaction.
5.2 Changing concentration or pressure
5.2.1 If the concentration of a dissolved reactant is increased, or the pressure of a reacting gas is increased
5.2.1.1 There are more reactant particles in the same volume
5.2.1.2 There is a greater chance of the particles colliding
5.2.1.3 The rate of reaction increases
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