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Chemical Thermodynamics (Thermodynamics (Entropy (Function:
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Chemical Thermodynamics
Thermochemistry
Calorimetry
Coffee-cup Calorimeter
Constant Pressure
heat released,-q=heat gained by calorimeter,q =mcT
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Forms of Energy
Change of internal energy,
ΔE=E(final)-E(initial)
=heat,q + work,w
= joule,J
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Thermodynamics
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Spontaneous Process
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Example:Rock roll down from hill
(roll up a hill need work,therefore non-spontaneous)
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Gibbs Free Energy
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➸If ∆G= -ve,the reaction is spontaneous
➸If∆G= +ve, the reaction is non-spontaneous
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