1.1 The rate of chemical reactions
- Created by: laurenhemsley2
- Created on: 19-04-15 19:17
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- The rate of chemical reactions
- What is a reaction rate?
- As the reaction A+2B?C takes place, concentrations of A and B decrease with time and the concentration if C increases with time
- We can measure the concentrations with time and plot the results in a graph
- The rate of the reaction is defined as the change in concentration (of any of the reactants or products) with unit of time
- On the graph the line for C increases because the concentration increases over time
- A and B decrease, however in the equation for every A that reacts there are two of B
- The concentration of B decreases twice as quickly
- For this reason it is important to state whether we are following A, B or C
- We usually assume that the rate is measured by following the products
- The rate of reaction at any instant
- We are often interested about the rate at a particular time rather than over a period of time
- What is a reaction rate?
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