6.2.2 0.0 / 5 ? ChemistryAmino Acids, Amides and ChiralityA2/A-levelOCR Created by: Lara_BryceCreated on: 28-05-18 16:45 What is the general formula of alpha-amino acids? NH2 CHR COOH. 1 of 10 How do amino acids react with alkalis? The carboxylic acid group reacts with alkalis to form a salt and water. 2 of 10 How do amino acids react with alcohols? The carboxylic acid group reacts with alcohols to form esters; heat the amine with the alcohol in concentrated sulphuric acid. 3 of 10 How do amino acids react with acids? The amine group is basic and reacts with acids to make salts. 4 of 10 Amides are the product of which reaction? Acyl chlorides react with ammonia and amines produce amides. 5 of 10 What is the structure of primary, secondary and tertiary amides? The nitrogen atom has bonded to either one, two or three carbon atoms. 6 of 10 What are stereoisomers? Compounds with the same structural formula but a different arrangement of atoms. 7 of 10 What is needed for a molecule to have optical isomers? A chiral centre (a carbon atom which is attached to four different atoms). 8 of 10 What are optical isomers? Stereoisomers that are non-superimposable mirror images of each other; also called enantiomers. 9 of 10 For each chiral carbon atom how many optical isomers are there? One pair of optical isomers for each chiral carbon atom. 10 of 10
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