Expert Chemistry Tutoring

MS1

- Saturated hydrocarbon (1)

- Only single bonds between carbon atoms (1)

MS2

- Ethene has weaker intermolecular forces (1)

- Due to weaker dispersion forces between non-polar molecules (1)

- Ethane has stronger intermolecular forces (1)

MS3

- Complete structural formula shown (3)

MS4

- Convert mass of hydrogen to moles: 12 g / 1 g/mol = 12 mol (1)

- Calculate the ratio of moles of hydrogen to carbon: 12 mol / 16 mol = 3:4 (1)

- Simplify the ratio to obtain the empirical formula: C3H6 (2)

MS5

- Production of plastics, e.g. polyethylene (1)

- Production of fuels, e.g. ethene (1)

MS6

- Ethene has a double bond between the carbon atoms (1)

- Ethane has a single bond between the carbon atoms (1)

- Ethene has a hydrogen atom on each carbon atom involved in the double bond (1)

MS7

MS8

- Alkenes are more reactive than alkanes in addition reactions (1)

- Alkenes have a double bond which is more reactive than a single bond (1)

- Alkanes do not undergo addition reactions easily (1)

MS9

- Compounds with the same molecular formula but different structural formulae (1)

- Different arrangement of atoms in space (1)

MS10

- Use bromine water: ethene will decolourize the bromine water while ethane will not (1)

- Use potassium permanganate solution: ethene will produce a purple colour while ethane will not (1)

- Use a burning splint: ethene will burn with a luminous flame while ethane will burn with a non-luminous flame (1)