Homologous Series Flashcards
What is the general formula of an alkane?
Cn H2n+2
What is the general formula for an alkene?
Cn H2n
What is the general formula for a cycloalkane?
Cn H2n
What are the first eight prefixes of any homologous series?
Meth- Eth- Prop- But- Pent- Hex- Hept- Oct-
How are alkanes, alkenes and cycloalkanes made?
The cracking of crude oil
How many hydrogen’s does pentane have?
12
What is the functional group of an alkene?
It has a double bond
What does the “2” of pent-2-ene mean
The double bond is at position 2
What is characteristic of a cycloalkane?
The carbon atoms are placed in a ring
What does it mean to say that a compound is saturated or unsaturated?
In saturated compounds, all the available bonds are occupied, however in unsaturated compounds there is a double bond
Which is more reactive, a saturated compound or an unsaturated compound?
An unsaturated compound
What happens when we add hydrogen to an alkene?
The double bond breaks and the compound becomes an alkane
How can we test if a compound is an alkene?
We can add it to bromine and the colour of the mixture will go from orange to colourless
What does the “3-methyl” of 3-methyl pentane mean?
The alkane has a methyl group on position 3
