2022

Question 1

Explain how this leads to peaks in an NMR spectrum corresponding to
different 1H environments.

Answer 1

hydrogen nuclei aligns with the magnetic field
- different energy emitted

Question 2

State what causes the d orbital splitting in octahedral complexes.

Answer 2

Repulsion from electrons

Question 3

State one difference between a bonding molecular orbital and an
antibonding molecular orbital.

Answer 3

Anti-bonding unfilled and bonding filled

Question 4

Suggest an improvement to the procedure that would maximise the mass
of caffeine extracted from 100 cm3 of the soft drink using 60 cm3 of
dichloromethane.

Answer 4

Use a higher number of extractions
with a smaller volume