Thermodynamics.

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Presentation transcript:

Thermodynamics

Heat Curve

Types of Reactions Exothermic - Energy is released Surroundings get hot Endothermic - Energy is absorbed Surrroundings get cold

Exothermic Diagram Ea Activation Energy - ∆H Energy Reaction Progress Reactant - ∆H Energy Product Reaction Progress

Kinetics Rates of reactions Increase rate by More surface area Higher temperature Higher concentration Catalyst

Catalyzed Reaction Ea is lowered - ∆H Energy Reaction Progress Reactant Ea is lowered - ∆H Energy Product Reaction Progress

Calculating Heat Heat = C x m x ∆T Temp Change = T2-T1 Mass (g) Specific Heat = energy needed to raise 1 g of Substance 1°C

Calculating Heat A 25.0 g piece of metal that absorbs 500 J of energy as it goes from 25°C to 35°C. What is the specific heat?

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