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| • | IV. Physical
state of reactants: reactions in |
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| solution
(liquids) are often very fast. In the |
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| solid state
molecules have limited motion, |
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| in the gas phase
have large distances |
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| between molecules
and not many collisions |
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| so these
reactions may be slower. In the |
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| liquid phase the
molecules (ions) are able to |
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| move and are
close to each other. |
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