2273475
Description
Mind Map by ainearrigan, updated more than 1 year ago
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Created by ainearrigan
almost 10 years ago
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Chemical Equilibrium
- DEFINITION: the state of dynamic balance
where the rate of the forward
reaction equals the rate of the
backwards reaction
- Dynamic- when
the 2 reactions are
still occurring
- once the reaction reaches equilibrium there is
no change in the concentration of reactants or
products
- both reactants and products will be
present @ equilibrium
- concentration of products @ equilibrium depends on
the reaction itself and the conditions
- Dynamic- when
the 2 reactions are
still occurring
- Le Chatelier's principal
- DEFINITION- if a stress is applied to a
system the system reacts
(readjusts) to relieve the
stress
- Pressure increases - goes to the side with less moles
pressure decreases- goes to the side with the greater no.
of moles
- pressure only has an effect if
- both substances are gases
- different no.s
of moles on
each side of the
equation
- both substances are gases
- pressure only has an effect if
- Temperature increase - endothermic reaction occurs
Temperature decrease -exothermic reaction occurs
- Concentration X increases - goeses to remove X
Concentration X decreases- goeses to increase X
- Expt.
- DEFINITION- if a stress is applied to a
system the system reacts
(readjusts) to relieve the
stress
- Industrial applications of Le
chartseliers principle
- The haber process
- ammonia manufucturing
- Pressure - high pressure the reactions goeses to the right
but it is expensive to maintain and potentially dangerous
a compromise is reached @ 200 atmospheres
- Temperature- low temp, the reaction sides to the right
but this will make the reaction slow a compromise is
reached @ 500 degrees
- Pressure - high pressure the reactions goeses to the right
but it is expensive to maintain and potentially dangerous
a compromise is reached @ 200 atmospheres
- ammonia manufucturing
- The contact process
- manufacturing of sulfuric acid
- Pressure - high pressure increases the yield
but is carried out just above atmospheric
pressure
- Temperature - low temp. favours the
production of SO3 but a compromise is
reached @ 450 degrees
- Pressure - high pressure increases the yield
but is carried out just above atmospheric
pressure
- manufacturing of sulfuric acid
- The haber process
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