Chemistry OCR F324 Deep breath... 3.5 / 5 based on 8 ratings ? ChemistryAcids, bases and saltsArenesA2/A-levelAll boards Created by: AmandaCreated on: 16-06-12 17:21 Arenes always contain.. One or more Benzene rings. 1 of 32 What is the enthalpy change of hydrogenation of Benzene? -208KJ/mol 2 of 32 Delocalised electrons.... Are shared between 2 or more atoms. 3 of 32 Benzene takes part in.. Electrophilic substitution. 4 of 32 The reactants in the nitration of Benzene are.. Benzene and concentrated nitric acid. 5 of 32 The conditions for the nirtation of benzene are... 50 6 of 32 A curly arrow represents... A pair of electrons. 7 of 32 A phenol.. Has an -OH directly attached to the Benzene ring. 8 of 32 When dissolved in water phenol.. Forms a weak acidic solution. 9 of 32 Aquesous phenol+ bromine water= 2,4,6-tribromophenol 10 of 32 This product is a.. White precipitate 11 of 32 The oxidising agent for oxidising alchohols is... Acidified dichromate ions. 12 of 32 When Brady's reagent is added to an aldehyde or ketone... An orange precipitate forms. 13 of 32 When Tollen's reagent is added to a carboxyllic acid.. Nothing happens. 14 of 32 In esterification... Concentrated sulphuric acid acts as the catalyst. 15 of 32 Name the product of esterification of decanoic acid and propanol. Propyl decanoate 16 of 32 One of the reagents in alkaline hydrolysis is.. Sodium hydroxide. 17 of 32 The products of alkaline hydrolysis of an ester are Salt of the carboxyllic acid and alchohol. 18 of 32 Aliphatic amines are prepaired by... Warming a halogenalkane gently with ammonia, using ethanol as a solvent. 19 of 32 The first step in the preparation of industrial dyestuffs is.. Diazotisation. 20 of 32 To generate nitrous acid... Sodium nirtite is reacted with HCl. 21 of 32 What is peptide made of? Amino acids. 22 of 32 An amino acid has an isoelectric point of 4.5, when the PH is 7.8.... The amino acid acts as an acid, donating a proton. 23 of 32 Amino acids join together to form.. Peptide linkages. 24 of 32 If a compund has 4 chiral carbons, how many optical isomers does it have? 8 25 of 32 In chromatography, a sloid stationary phase separates by.. Adsorbtion. 26 of 32 Rf is... Distance moved by component/ distance moved by solvent 27 of 32 In GC the mobile phase is... A carrier gas 28 of 32 In a Gas chromatagraph.... The area under each peak is proportional to the amount of compound in a sample. 29 of 32 Whiich of these is NOT a use for GC-MS. Used to analyse DNA sequences. 30 of 32 What does nmr stand for? Nuclear magnetic resonance 31 of 32 In proton nmr a triplet indicates.. There are two hydrogens attached to the adjacent carbon. 32 of 32
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