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A level chemistry paper 2 Exam 2024 Review
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A level chemistry paper 2 Exam 2024 Review
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A level chemistry paper 2 Exam2024 Review
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
Why does E-Z isomerism occur - 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 - Answer>> Temperature in degrees Celsius + 273
Metres cubed - Answer>> The unit of volume in ideal gas
equation
Number of particles= - Answer>> Number of moles x avogadros
constant
Linear - Answer>> 2 bonding pairs, 0 lone pairs, 180 bond
angle
Trigonal planar - Answer>> 3 bonding pairs, 0 lone pairs, 120
bond angle
Tetrahedral - Answer>> 4 bonding pairs, 0 lone pairs, 109.5
bond angle
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