Enthalpy Of Chemistry: Causes And Types Of Exothermic

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An exothermic reaction is any reaction that once done gives out energy to its surroundings. The energy given out is usually in the form of heat energy. This release of heat energy increases the temperature of the reaction mixture itself as well as the surroundings. The reason heat energy is given out is due to the fact that during exothermic reactions, chemical bonds are being formed. Exothermic reactions can be used in everyday lives such as body warmers. ENDOTHERMIC REACTIONS An endothermic reaction is the opposite to that of an exothermic reaction as this type takes in energy from its surroundings. This energy obtained is in the form of heat and brings a drop in temperature making everything around and the reaction mixture to become cold. The taking in of energy is due to the fact that bonds are being broken. Endothermic reactions can be used in everyday lives such as cold packs for sports injuries. ENTHALPY OF COMBUSTION This is a change in enthalpy when one mole of a substance is completely burned under the standard conditions. Both the products and reactants are in their standard states. Enthalpy of combustion is a type of exothermic reaction and so it will always be negative. ENTHALPY OF NEUTRALISATION This is the change in enthalpy when one mole of water is formed from the reaction between an acid and an alkali under standard solutions. Enthalpy of neutralisation is always negative. ENTHALPY OF FORMATION This is when one mole of any compound is produced in a

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