Bond Enthalpies Define the term average bond enthalpy Average Bond Enthalpy - The amount of energy required to break one mole of bonds in the gaseous state averaged across a range of compounds containing that bond. For example, in determining the bond enthalpy of...
Hess’s Law Determine the enthalpy change of a reaction that is the sum of two or three reaction with known enthalpy changes The energy difference between two states is independent of the route between them e. The heat evolved or absorbed in a chemical process is the...
Calculation of Enthalpy Changes Calculate the heat energy change when the temperature of a pure substance is changed Specific Heat Capacity – Symbol c – The amount of heat energy required to raise the temperature of 1.00g of the substance by 1.00°C or 1.00K The...
Exothermic and Endothermic Reactions Define the terms exothermic reaction, endothermic reaction and standard enthalpy change of reaction Exothermic Reaction - A reaction that causes the temperature of the surroundings to increase. Energy is lost, or released, in the...