A level chemistry paper 2
Silver nitrate+ nitric acid + chloride ions ANSWER White precipitate Silver nitrate+ nitric acid + bromide ions ANSWER Cream precipitate Silver nitrate+ nitric acid + iodide ions ANSWER Yellow precipitate Substances that decolorise bromine water ANSWER Alkenes Electrophiles ANSWER Electron pair acceptors, attracted to electrons e.g H+ NaF and NaCl ANSWER Produces misty fumes with conc sulphuric acid NaBr ANSWER Produces misty and orange/brown fumes with conc sulphuric acid NaI ANSWER Produces misty fumes, purple vapour, bad egg smell with conc sulphuric acid Le chateliers principle ANSWER If a factor affecting the equilibrium is changed the equilibrium will shift to oppose this change Enthalpy change ANSWER The overall temperature change at a constant pressure of a reaction Hess's law ANSWER The overall enthalpy change of a reaction at a constant pressure is independent to the route taken W merism occur why does E-Z is also ANSWER Due to the restriction of the double carbon bond Positional isomers ANSWER The functional group is attached to a different carbon Functional group isomers ANSWER Same atoms arranged into different functional groups e.g cyclohexane and hexene Dative covalent bond ANSWER A bond of shared electrons where both electrons are supplied from one of the atoms Kelvin
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