CIE A Level Chemistry复习笔记7.6.11 Electrophoresis
Electrophoresis Electrophoresis?is an?analytical technique?which separates ions by placing them in an electrical field This method is often used in?biochemical analysis?to?identify?and?purify?prote...
CIE A Level Chemistry复习笔记7.6.10 Peptide Bonds
Formation of Peptide Bonds Each amino acid contains an amine (-NH2) and carboxylic acid (-COOH) group The -NH2?group of?one amino acid?can react with the -COOH group of?another amino acid?in a?cond...
CIE A Level Chemistry复习笔记7.6.9 Amino Acids
Acid / Base Properties of Amino Acids, Zwitterions & the Isoelectric Point Amino acids?are?organic compounds?that contain two functional groups: A basic?amino?(-NH2) group An acidic?carboxylic?...
CIE A Level Chemistry复习笔记7.6.8 Relative Basicity of Amides & Amines
Relative Basicity of Amides & Amines A?base?is a species that can?donate?its lone pair of electrons to form a?dative covalent bond?with another species Amines?are basic as the?nitrogen?atom has...
CIE A Level Chemistry复习笔记7.6.7 Reactions of Amides
Reactions of Amides Amides?are formed from the?condensation reaction?of?carboxylic acids or acyl chlorides?with?ammonia or amines The amide group (CONR2) in these compounds can undergo reactions in...
CIE A Level Chemistry复习笔记7.6.6 Azo Compounds
Azo Compounds Azo?(or?diazonium)?compounds?are organic compounds that have an R1-N=N-R2?group They are often used as?dyes?and are formed in a?coupling reaction?between the?diazonium ion?and an?alka...
CIE A Level Chemistry复习笔记7.6.5 Relative Basicity of Ammonia, Ethylamine & Phenylamine
Relative Basicity of Aqueous Ammonia, Ethylamine & Phenylamine Ammonia and amines act as?bases?as they can donate their lone pair of electrons to form a dative covalent bond with a proton The?b...
CIE A Level Chemistry复习笔记7.6.4 Production & Reactions of Phenylamine
Preparation of Phenylamine Phenylamine?is an organic compound consisting of a benzene ring and an?amine?(NH2) functional group It can be produced in a?three-step synthesis?reaction followed by the ...
CIE A Level Chemistry复习笔记7.6.3 Basicity of Amines
Basicity of Aqueous Solutions of Amines The nitrogen atom in ammonia and amine molecules can?accept?a?proton?(H+?ion) They can therefore act as?bases?in aqueous solutions by?donating?its lone pair ...
