Monday, October 5, 2009

Energy Unit Ouline

• calculating enthalpy change q=mct
• molar enthalpy calculations – comparing system and surroundings
                o nHx = H and nHx=-mct [Could not get the 'delta' symbol]
• 4 ways to represent enthalpy changes
A few methods to determine the energy change associated with a chemical reaction
• Method 1: Hess’s Law – add up some equations then add up the enthalpy change of each equation
• Method 2: Standard Enthalpies of Formation – using tabulated data
• Method 3: Bond energies – using still more tabulated data, this time: [bonds broken – bonds formed]
• Entropy – will a reaction tend to be spontaneous?
• Measuring Rates of Reactions – graphically and given experimental data & a balanced chemical equation
• factors Affecting Rates of Reactions
• Rate Laws
• Potential Energy Diagrams
• Collision Theory
• Mechanisms

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