The enthalpy of the reaction

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• Standard enthalpy change of reaction — The standard enthalpy change of reaction (denoted ΔH ° or ΔH o) is the enthalpy change that occurs in a system when one mole of matter is transformed by a chemical reaction under standard conditions. For a generic chemical reaction:nA A + nB B + …   Wikipedia

• Enthalpy — Thermodynamics …   Wikipedia

• reaction, heat of — Amount of heat that must be added or removed during a chemical reaction to keep all substances involved at the same temperature. If it is positive (heat must be added), the reaction is endothermic; if it is negative (heat is given off), the… …   Universalium

• Standard enthalpy change of formation — The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy that accompanies the formation of 1 mole of a substance in its standard state from its constituent elements in their standard states (the… …   Wikipedia

• Enthalpy-entropy compensation — When a chemical reaction exhibits a linear relationship between enthalpy and entropy, one might observe what is known as an Enthalpy Entropy Compensation, where the magnitude of change in the Gibbs free energy is less than one might expect.… …   Wikipedia

• Standard enthalpy change of neutralisation — The standard enthalpy change of neutralisation is the change in enthalpy that occurs when an acid and base undergo a neutralisation reaction to form one mole of water under standard conditions (298 K and 1 atm), i.e. react to produce water and a… …   Wikipedia

• enthalpy — Heat content, symbolized as H; a thermodynamic function, defined as E + PV, where E is the internal energy of a system, P the pressure, and V the volume; the heat of a …   Medical dictionary

• Exothermic reaction — An exothermic reaction is a chemical reaction that releases heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation::reactants → products + energyOverviewAn exothermic reaction is a chemical reaction accompanied by… …   Wikipedia

• Chemical reaction — Chemical reactions redirects here. For the 2007 television episode, see Chemical Reactions (Men in Trees). A thermite reaction using iron(III) oxide. The sparks …   Wikipedia

• Cheletropic reaction — Pericyclic Reactions Cheletropic reactions are a type of pericyclic reaction. A pericyclic reaction is one that involves a transition state with a cyclic array of atoms and an associated cyclic array of interacting orbitals. A reorganization of σ …   Wikipedia

• Nuclear reaction — In nuclear physics and nuclear chemistry, a nuclear reaction is semantically considered to be the process in which two nuclei, or else a nucleus of an atom and a subatomic particle (such as a proton, or high energy electron) from outside the atom …   Wikipedia