A student carried out a cracking reaction on hydrocarbon, P, and obtained two products; Q and R.
The student then made the following notes:
1 | Q is unsaturated. |
2 | R will decolourise bromine water. |
3 | A molecule of P has 7 carbon atoms. |
Which of the statements are correct?
1 & 3
1 & 2
2 & 3
1, 2 & 3
Did this page help you?
Compound X is shown in the dot-and-cross diagram.
Which statement about compound X is correct?
It is a saturated hydrocarbon.
It is an isomer of butene.
It will decolourise bromine water.
Its name is propane.
Did this page help you?
Which row correctly describes alkenes?
| saturated or unsaturated | result when shaken with aqueous bromine |
A | saturated | no change |
B | saturated | the aqueous bromine is decolourised |
C | unsaturated | no change |
D | unsaturated | the aqueous bromine is decolourised |
Did this page help you?
The diagram shows a sequence of reactions.
Which row correctly names the processes P, Q and R?
| P | Q | R |
A | distillation | fermentation | respiration |
B | distillation | hydration | combustion |
C | cracking | fermentation | respiration |
D | cracking | hydration | combustion |
Did this page help you?
Hydrocarbons separated by fractional distillation of petroleum can be cracked to make useful shorter chain products.
Which substance is not a product of the cracking of propane, Mr 44?
C4H8
C2H4
C3H6
H2
Did this page help you?
The apparatus below was used to test gas Y
The bromine solution quickly went colourless.
What is the correct structure of gas Y?
Did this page help you?