Chapter%2013-1

Chapter%2013-1 - Chpt 13: Solubility 13.3-13.5 13.3...

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Chpt 13: Solubility 13.3-13.5
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13.3 Solutions Entropy : a measure of disorder all systems tend toward disorder
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13.3 Solutions The increase in entropy (disorder) in solutions is a driving factor in many dissolutions Which is more disordered?
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13.4 Solubility Solubility is an equilibrium process Equilibrium: Forward rate equals reverse rate Consider: undissolved  dissolved And reverse: dissolved  undissolved The rates are equal
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13.4 Solubility The amount of undissolved and the amount of dissolved remain constant The rate of an atom going to dissolved equals the rate of an atom going back to undissolved Supersaturated : a solution that has more particles dissolved than the equilibrium value would be
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13.4 Solubility Changing temperature “shifts” the equilibrium Usually raising temperature shifts the equilibrium to more dissolved Low temp equilibrium High temp equilibrium
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One can not predict whether solubility will increase or decrease by raising the
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Chapter%2013-1 - Chpt 13: Solubility 13.3-13.5 13.3...

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