Calculations for AS and A level Chemistry
Being confident in tackling different types of mole calculation is the foundation upon which much of A level chemistry stands
From the blog
Naming carboxylic acids and their derivatives
Carboxylic acids contain the carboxyl functional group, -COOH, which is itself made from a carbonyl group and a hydroxyl group.
Continue readingNaming carboxylic acids and their derivatives
Aldehyde and ketone chemistry
Aldehydes and ketones are examples of carbonyl compounds. In an aldehyde the carbonyl group, C=O, is bonded to at least
Explaining the chemistry of the Group 7, the halogens
Group 7 consists of the elements fluorine, chorine, bromine, iodine and astatine, and they are known as the halogens. All
Continue readingExplaining the chemistry of the Group 7, the halogens
Explaining the chemistry of Group 2 metals
When we consider the elements of Group 2 we are invariably only investigating magnesium, calcium, strontium and barium. All isotopes
Everything you need to know about chromatography
Chromatography is all about separating a mixture into its constituents by distributing them between two phases – a mobile phase
Continue readingEverything you need to know about chromatography
Oxidising alcohols to form a carbonyl
Primary and secondary alcohols are oxidised by common oxidising agents such as potassium manganate(VII), KMnO4, or acidified sodium dichromate(VI), Na2Cr2O7.
What makes a good leaving group?
And why do some perfectly plausible reactions just not happen? Acyl chlorides readily react with hydroxide ions to form a
How to name an alcohol, an alkoxide or an ether
Alcohols are organic molecules containing the OH, hydroxyl, functional group and are named after their parent alkane … If the
Continue readingHow to name an alcohol, an alkoxide or an ether
How to prepare a halogenoalkane
There are number of ways to make a halogenoalkane, each of which has its own advantages and disadvantages. Halogenation of
Experimental methods for following the rate of a reaction
Quenching We can stop a chemical reaction in its tracks using a practical technique called quenching. There are two ways
Continue readingExperimental methods for following the rate of a reaction