42139
| Question | Answer |
| Activation Energy | Minimum Energy required to start a reaction by the breaking of bonds |
| Standard Conditions | A Pressure of 100kPa , 298 K , concentration of 0.1 moldm-3 |
| Enthalpy Change of Reaction | Enthalpy Change when the number of moles of a compound as stated in the equation react together |
| Enthalpy Change of Formation | Enthalpy Change when one mole of a compound is formed from its elements in their standard states, under standard conditions |
| Enthalpy Change of Combustion | Enthalpy Change when one mole of a substance reacts completely with oxygen under standard conditions |
| Le Chatelier's Principle | When a system in dynamic equilibrium is subjected to a change , the position of the equilibrium will shift to minimise the change. |
| Average bond enthalpy | The average enthalpy change when breaking by homolytic fission 1 mole of a bond in the molecules of a gaseous species |
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