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7 Cards in this Set
- Front
- Back
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What the does the area under the boltzman distribution curved show? |
Number of molecules |
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What happens to the curve when tempreture decreases (boltzman) |
The peak shifts to the left and the trough becomes higher, showing that more molecules now have less kinetic energy and more molecules are below the required E a -low rate of reaction. |
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How does increasing temperature/pressure effect boltzman distribution |
Curve shifts to the right and the number of molecules above the activation energy is increased. If the number of particles has increased at this energy level then the number of particles at lower energy decreases and so the curve lowers here. |
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How do catalyst change a rate of reaction? |
Provide a alternative pathway (through Intermediates) Lower activation energy so more particles can react Catalysts are reused Improve yield of products Faster rate of reaction |
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Suggest 3 advantages of catalyst use? |
Faster reaction(larger yield more quick) Lowers cost Less energy required |
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How biological catalysts differ from chemical catalysts? |
Biological = Specific to one substrate Enzymes are protiens |
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State le chatliers principle? |
When a system in dynamic equilibrium is subject to change. The position of the equilibrium will shift on order to minimise the change. |
