Standard Enthalpy A
Change in Enthalpy of Formation, Change in Enthalpy of a Reaction, Hess's Law
When reactions occur, there are changes in enthalpy that accompany them. These enthalpy changes can determine how much energy can be harnessed from different reactions. The enthalpy of a formation of given compounds is the change in enthalpy that accompanies the formation of the compound from its elements. For instance, the change in enthalpy that occurs when carbon dioxide is produced from the reaction of carbon with oxygen gas. Hess's Law is a method that was created to calculate the change in enthalpy of a reaction, if the changes in enthalpy are known for several other reactions that can be added together to form the final reaction.
Packet: Enthalpy A
When reactions occur, there are changes in enthalpy that accompany them. These enthalpy changes can determine how much energy can be harnessed from different reactions. The enthalpy of a formation of given compounds is the change in enthalpy that accompanies the formation of the compound from its elements. For instance, the change in enthalpy that occurs when carbon dioxide is produced from the reaction of carbon with oxygen gas. Hess's Law is a method that was created to calculate the change in enthalpy of a reaction, if the changes in enthalpy are known for several other reactions that can be added together to form the final reaction.
Packet: Enthalpy A
Standard Enthalpy B
Heat of Solution, Lattice Energy
When a compound dissolves in a solution there is an energy change that occurs. This energy change may be endothermic or exothermic depending on how strongly the compound is held together. Ionic compounds are held together by ionic forces. The measure of strength of these ionic forces is lattice energy. Lattice energy is energy required to completely separate one mole of an ionic compound.
Packet: Enthalpy B
When a compound dissolves in a solution there is an energy change that occurs. This energy change may be endothermic or exothermic depending on how strongly the compound is held together. Ionic compounds are held together by ionic forces. The measure of strength of these ionic forces is lattice energy. Lattice energy is energy required to completely separate one mole of an ionic compound.
Packet: Enthalpy B