Mixture of hydrocarbons with a similar chain length and boiling point range
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What is molecular formula?
The formula which shows the actual number of each type of atom
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What is emperical formula?
It shows the siplest whole number ration of atoms of each elememnt in the compund
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What do homologous organic compunds have in common?
The same functional group and same general formula and they have the same chemical properties
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What is a structural isomer?
They have the same molecular formula but different structural formula
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What is a chain isomer?
compounds with the same molecular formula but different structures of the carbon skeleton
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What is a position isomer?
Compounds with the same molecular formula but different structures due to different positions of the same functional group on the same carbon skeleton
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What is functional group isomer?
Compunds with the same molecular formula but with atoms arranged to give different functional groups
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what are four main points that happen in a fractional column?
Oil is preheated and passed into column, The temperature of the column decreases as you go upwards therefore the smaller molecules condense at the bottom
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Economic reason for cracking?
The petroleum fractions with shorter C chains are in more demand than larger chains
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What are two conditions of thermal cracking?
high pressure and high temperature
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What does it mostly produce?
alkenes
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What are the conditions for catalytic cracking?
high temperature (450) low pressure and zeolite catalyst
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