Paper 4 0.0 / 5 ? ChemistryReactionsA2/A-levelEdexcel Created by: lucywolfpCreated on: 21-04-17 20:04 How do you test for a carbonyl group? Add 2,4-dinitrophenylhydrazine, yellow precipitate formed 1 of 8 What type of reaction does benzene typically undergo? Electrophilic substitution 2 of 8 What type of reactions do alkenes typically undergo? Electrophilic addition 3 of 8 What are two features of a system that has reached dynamic equilibrium? Amount of reactants and products remain constant, forward and backward reactions occur at same rate 4 of 8 Why is water vapour not a concern considering global warming? Water vapour levels in the atmosphere remain relatively constant 5 of 8 What effect does infrared radiation have on polar bonds? It makes them vibrate 6 of 8 What type of bonds occur in transition metal complexes? Dative covalant bonds (lone pair from ligands) 7 of 8 What is a bidentate ligand? A ligand with two atoms, each of which can use a lone pair of electrons to form a dative bond with a metal ion 8 of 8
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