AQA A Level Chemistry复习笔记7.3.3 Biodiesel
Biodiesel Biodiesel Biodiesel is made from renewable vegetable oils rather than non sustainable petrochemicals Natural triglyceride oils are converted to esters of methanol, which makes them...
AQA A Level Chemistry复习笔记7.3.2 Esters
Esters Esters Esters are a carboxylic acid derivative which contains the ester group, -COO- An ester is named after the parent carboxylic acid from which it is derived Remove the -oic acid suffix f...
AQA A Level Chemistry复习笔记7.2.3 Nucleophilic Addition
Nucleophilic Addition Many of the reactions which carbonyl compounds undergo are nucleophilic addition reactions The carbonyl group -C=O, in aldehydes and ketones is polarised The oxygen ato...
AQA A Level Chemistry复习笔记7.2.2 Reduction of Carbonyls
Reduction of Carbonyls Reduction of Carbonyls There are a large number of reducing agents which will reduce both an aldehyde and a ketone to an alcohol Aldehydes are reduced to primary alcoh...
AQA A Level Chemistry复习笔记7.1.3 Racemic Mixtures
Racemic Mixtures Net Optical activity Let’s suppose that in a solution, there is 20% of the enantiomer which rotates the plane polarised light clockwise and 80% of the enantiomer which rotat...
AQA A Level Chemistry复习笔记7.1.2 Identifying Chiral Centres
Identifying Chiral Centres Identifying chiral centres in a molecule takes a bit of practice whether it is from a formula, a 2D drawing or a 3D drawing To be successful you need to differenti...
AQA A Level Chemistry复习笔记6.3.2 Reactions with Bases
Reactions with Bases The differences in the the chemistry of +2 and +3 aqua ions can be seen in their reactions with bases The reactions of iron(II), iron(III), copper(II) and aluminium with...
AQA A Level Chemistry复习笔记6.2.7 Catalysis
Catalysis Catalysts play an important part in industry allowing reactions to be carried out more quickly and at lower temperatures There are two types of catalysts, heterogeneous and homogen...
AQA A Level Chemistry复习笔记6.2.6 Redox Titrations
Redox Titrations Redox titration involves an oxidising agent being titrated against a reducing agent Electrons are transferred from one species to another In acid-base titrations indicators ...
