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Tag Archives: enthalpy changes

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Spontaneity and Thermodynamics

ScienceBy William Anderson (Schoolworkhelper Editorial Team)January 5, 2011Leave a comment

The First Law of Thermodynamics: This is the law of conservation of energy. The total amount of energy in the universe is constant. Energy cannot be created nor destroyed. We have seen that energy can be transferred from a system to its surroundings and vice versa. During these processes no energy is created nor destroyed…

Enthalpy Change

ScienceBy William Anderson (Schoolworkhelper Editorial Team)July 5, 2010Leave a comment

Enthalpy change is also known as heat of reaction, enthalpy of reaction, change in heat content. Enthalpy = total energy of a system It is impossible to measure the total kinetic and potential energy of a system, so instead we measure enthalpy change (using calorimeters). Enthalpy Change –  is the energy absorbed from or released…

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