A LEVEL CHEMISTRY PAPER 2 2ND EDITION 2025
QUESTIONS AND VERIFIED ANSWERS
1. Silver nitrate+ nitric acid + chloride ions - ✔✔✔White precipitate
2. Silver nitrate+ nitric acid + iodide ions - ✔✔✔Yellow precipitate
3. NaBr - ✔✔✔Produces misty and orange/brown fumes with conc sulphuric acid
4. NaI - ✔✔✔Produces misty fumes, purple vapour, bad egg smell with conc sulphuric acid
5. Le chateliers principle - ✔✔✔If a factor affecting the equilibrium is changed the
equilibrium will shift to oppose this change
6. NaF and NaCl - ✔✔✔Produces misty fumes with conc sulphuric acid
pg. 1
, 7. Functional group isomers - ✔✔✔Same atoms arranged into different functional groups
e.g cyclohexane and hexene
8. Dative covalent bond - ✔✔✔A bond of shared electrons where both electrons are
supplied from one of the atoms
9. Kelvin - ✔✔✔Temperature in degrees Celsius + 273
10.Metres cubed - ✔✔✔The unit of volume in ideal gas equation
11.Bent/ v shaped - ✔✔✔2 lone pairs, 2 bonding pairs, 104.5 bond angle
12.Number of particles= - ✔✔✔Number of moles x Avogadro’s constant
13.Linear - ✔✔✔2 bonding pairs, 0 lone pairs, 180 bond angle
14.Trigonal planar - ✔✔✔3 bonding pairs, 0 lone pairs, 120 bond angle
15.Tetrahedral - ✔✔✔4 bonding pairs, 0 lone pairs, 109.5 bond angle
16.Trigonal bipyramidal - ✔✔✔5 bonding pairs, 0 lone pairs, 90 and 120 bond angle
17.Pyramidal - ✔✔✔3 bonding pairs, 1 lone pair, 107 bond angle
18.Octahedral - ✔✔✔6 bonding pairs, 0 lone pairs , 90 bond angle
pg. 2
QUESTIONS AND VERIFIED ANSWERS
1. Silver nitrate+ nitric acid + chloride ions - ✔✔✔White precipitate
2. Silver nitrate+ nitric acid + iodide ions - ✔✔✔Yellow precipitate
3. NaBr - ✔✔✔Produces misty and orange/brown fumes with conc sulphuric acid
4. NaI - ✔✔✔Produces misty fumes, purple vapour, bad egg smell with conc sulphuric acid
5. Le chateliers principle - ✔✔✔If a factor affecting the equilibrium is changed the
equilibrium will shift to oppose this change
6. NaF and NaCl - ✔✔✔Produces misty fumes with conc sulphuric acid
pg. 1
, 7. Functional group isomers - ✔✔✔Same atoms arranged into different functional groups
e.g cyclohexane and hexene
8. Dative covalent bond - ✔✔✔A bond of shared electrons where both electrons are
supplied from one of the atoms
9. Kelvin - ✔✔✔Temperature in degrees Celsius + 273
10.Metres cubed - ✔✔✔The unit of volume in ideal gas equation
11.Bent/ v shaped - ✔✔✔2 lone pairs, 2 bonding pairs, 104.5 bond angle
12.Number of particles= - ✔✔✔Number of moles x Avogadro’s constant
13.Linear - ✔✔✔2 bonding pairs, 0 lone pairs, 180 bond angle
14.Trigonal planar - ✔✔✔3 bonding pairs, 0 lone pairs, 120 bond angle
15.Tetrahedral - ✔✔✔4 bonding pairs, 0 lone pairs, 109.5 bond angle
16.Trigonal bipyramidal - ✔✔✔5 bonding pairs, 0 lone pairs, 90 and 120 bond angle
17.Pyramidal - ✔✔✔3 bonding pairs, 1 lone pair, 107 bond angle
18.Octahedral - ✔✔✔6 bonding pairs, 0 lone pairs , 90 bond angle
pg. 2
