AQA A Level Chemistry复习笔记8.2.8 Identifying Ions
Identifying Ions Testing for positive ions Simple test tube reactions can be done to identify the following positive ions: Group 2 ions (M2+) Ammonium ions (NH4+) If the sample to be ...
AQA A Level Chemistry复习笔记8.2.7 Autocatalysis Experiments
Autocatalysis Experiments Autocatalysis Experiment - Titration with sodium thiosulfate Autocatalysis occurs when one of the products catalyses the reaction Potassium manganate(VII) will reac...
AQA A Level Chemistry复习笔记8.2.6 Colorimetry & Complex Ions
Colorimetry & Complex Ions Colorimetry & Complex Ions Colorimetry can be used to measure the absorption of radiation using a colorimeter This uses a lamp as a source of white light, ...
AQA A Level Chemistry复习笔记8.2.5 Vanadium Oxidation States
Vanadium Oxidation States Vanadium Oxidation States Vanadium is a transition metal which has variable oxidation states Vanadate(V) ions can be reduced to oxidised vanadium species with the o...
AQA A Level Chemistry复习笔记8.2.4 Redox Titrations
Redox Titrations Redox Titrations Iron has variable oxidation states and this characteristic can be exploited in redox titrations of Fe2+ with MnO4- or Cr2O72- Both the manganate(VII) ion an...
AQA A Level Chemistry复习笔记8.2.3 Ligand Substitution Experiments
Ligand Substitution Experiments Ligand Substitution Experiments The factors that affect the colour formed for different transition metal ion solutions are: type of ligand change in oxidation...
AQA A Level Chemistry复习笔记8.2.2 Testing Period 3 Oxides
Testing Period 3 Oxides Forming Period 3 Oxides Period 3 elements from sodium to sulfur react with oxygen, forming an oxide with the period 3 element in its highest possible oxidation state ...
AQA A Level Chemistry复习笔记8.1.10 Making Buffers
Making Buffers Buffers can be made by a direct or indirect method The direct method involves measuring out the exact quantities needed of a solution of a weak acid and its salt The indirect ...
AQA A Level Chemistry复习笔记8.1.9 Titration Curves
Titration Curves Titration or pH curves are obtained by reacting known concentrations of acid with alkalis and measuring the pH during the neutralisation A suitable selection to use would be...
