Reaction rates and equillibrium

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6 Terms

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How does conc/pressure/temp affect rate of reaction?

INCREASE.

  • increase conc: more particles in same volume. Closer, more frequent successful collisions.

  • increase pressure: less space between particles. More successful/frequent collisions.

  • increase temp: particles gain more kinetic energy, more frequent successful collisions.

2
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Dynamic equilibrium definition

The rate of forward reaction is equal to the rate of reverse reaction. Constant con of reactants + products.

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Le chateliers principle

If there is a change in a closed system, system will move to minimse effect of change.

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Changes that systems move to minimise:

Conc: shifts to side that has less conc.

Temp: shifts to endothermic side if increase in temp.

Pressure: shifts to side w less/more mols.

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Kc (equilibrium constant)

Kc = products/reactants

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catalysts

Homogenous: same state as chemicals in reaction. REGENERATED. Gas/liquid.

Heterogeneous: different state as chemicals in reaction. SOLID. usually a surface for reactions.