AQA A Level Chemistry复习笔记1.8.2 Le Chatelier's principle
Le Chatelier's Principle Position of the equilibrium The position of the equilibrium refers to the relative amounts of products and reactants in an equilibrium mixture When the position of e...
AQA A Level Chemistry复习笔记1.7.6 Catalysts
Maxwell-Boltzmann Distribution Curve - Catalyst Catalysis is the process in which the rate of a chemical reaction is increased, by adding a catalyst A catalyst increases the rate of a reacti...
AQA A Level Chemistry复习笔记1.7.5 Effect of Concentration & Pressure
Concentration, Pressure & Rate of Reaction Concentration The more concentrated a solution is, the greater the number of particles in a given volume of solvent An increase in concentratio...
AQA A Level Chemistry复习笔记1.7.4 Effect of Temperature on Reaction Rate
Temperature & Rate of Reaction Temperature & Rate of Reaction Increasing the temperature of the reaction mixture increases the rate of reaction in the following two ways: At higher t...
AQA A Level Chemistry复习笔记1.7.3 Maxwell–Boltzmann Distributions
Maxwell-Boltzmann Distribution Curve - Temperature Maxwell-Boltzmann distribution curve A Maxwell-Boltzmann distribution curve is a graph that shows the distribution of energies at a certain...
AQA A Level Chemistry复习笔记1.7.2 Measuring Rates of Reaction
Measuring the Rate of a Reaction Reaction rate The rate of reaction is the speed at which a chemical reaction takes place and has units mol dm-3 s-1 or mol dm-3 min-1 The rate of a reaction ...
AQA A Level Chemistry复习笔记1.6.7 Bond Enthalpies
Bond Enthalpies The amount of energy required to break one mole of a specific covalent bond in the gas phase is called the bond dissociation energy Bond dissociation energy (E) is usually ju...
AQA A Level Chemistry复习笔记1.6.6 Applications of Hess’s Law
Hess' Law Calculations You must make sure that you can apply Hess' Law effectively and calculate enthalpy changes in different situations Remember - it is the data that is important Check wh...
AQA A Level Chemistry复习笔记1.6.5 Hess' Law
Using Hess' Law Calculating ΔHr from ΔHf using Hess’s Law energy cycles The products can be directly formed from the elements = ΔH2 OR The products can be indirectly formed from the elements...
