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Chapter 19 Section 4. Entropy -a quantitative measure of the disorder of a system Entropy= S units= J/ Kmol. Standard entropy = S 0 *this is at 25°C and 101.3kPa ∆ S 0 = ∑S 0 (products ) - ∑S 0 (reactants ) (-) = decrease in entropy (+) = increase in entropy - PowerPoint PPT Presentation
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Chapter 19 Section 4Entropy
-a quantitative measure of the disorder of a system
Entropy= S units= J/Kmol
Standard entropy = S0
*this is at 25°C and 101.3kPa
∆ S0 = ∑S0(products) - ∑S0(reactants)
(-) = decrease in entropy
(+) = increase in entropy
**equations must be balanced
**coefficient from balanced equation goes in front of S0
-chart page 558
