Chem 2.3

Description

A level Chemistry (Unit 2) Flashcards on Chem 2.3, created by Olivia22 on 09/04/2013.
Olivia22
Flashcards by Olivia22, updated more than 1 year ago
Olivia22
Created by Olivia22 about 11 years ago
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Resource summary

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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