Structural Isomerism

HideShow resource information
What is the definition of a Structural Isomer?
Structural Isomers have the same molecular formula but different structural formulae.
1 of 16
Name the 3 main types of Structural Isomerism
1. Chain Isomerism, 2. Positional Isomerism 3. Functional group Isomerism
2 of 16
When straight-chained alkanes are heated in the presence of a platinum catalyst, what do they become?
Branched Alkanes
3 of 16
What do the branched-chained Alkanes have?
Higher octane number and less tendency to auto-ignite
4 of 16
What is the definition of 'Auto-Ignition'?
Is the explosion of a fuel without a spark
5 of 16
What does Auto-Ignition in a petrol engine cause?
1. A knocking sound 2. Reduced engine performance 3. Engine damage
6 of 16
What is the definition of an 'Octane Number'
Octane number is a measure of the tendency of petrol to Auto-Ignite
7 of 16
What does a high Octane number mean?
A low tendency to auto ignite
8 of 16
Do you want a high or low octane number in a petrol?
High octane number
9 of 16
Short-Chain compounds have a ________ octane number than long-chain compounds
Higher
10 of 16
Branched-chain compounds have a ______ octane number than the corresponding unbranched-chain compounds
Higher
11 of 16
Do cycloalkanes have higher or lower octane numbers then the corresponding straight-chain alkanes?
Higher octane number
12 of 16
Do Arenes have a higher or lower octane number than cyloalkanes?
Higher octane number
13 of 16
Oxygenates have _____ octane numbers than Alkanes
Higher
14 of 16
What is added to petrol to increase the octane number?
Oxygenates
15 of 16
Name the 3 different chemical reactions used by the petrochemical industry to increase the octane number
1. Cracking 2. Reforming 3. Isomerisation
16 of 16

Other cards in this set

Card 2

Front

Name the 3 main types of Structural Isomerism

Back

1. Chain Isomerism, 2. Positional Isomerism 3. Functional group Isomerism

Card 3

Front

When straight-chained alkanes are heated in the presence of a platinum catalyst, what do they become?

Back

Preview of the front of card 3

Card 4

Front

What do the branched-chained Alkanes have?

Back

Preview of the front of card 4

Card 5

Front

What is the definition of 'Auto-Ignition'?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Isomerism resources »