14 Questions
What is the general formula for hydrocarbons?
CnH2n+2
Which of the following alkane molecules is NOT in the MEPB acronym?
Propene
What method is used to separate the many hydrocarbons in crude oil into fractions?
Fractional distillation
In the petrochemical industry, where is the heated crude oil piped into during fractional distillation?
Bottom of the column
How are the various fractions separated in a fractionating column during fractional distillation?
By size of the hydrocarbon molecules
What is the number of hydrogen atoms in an alkane molecule with 5 carbon atoms according to the general formula?
14
Which type of hydrocarbon has a higher energy content: alkanes or alkenes?
Alkanes
Which property of hydrocarbons allows them to be separated by fractional distillation?
Boiling point
What is the reason behind alkenes reacting with bromine water, turning it from orange to colorless?
Alkenes have a double bond that makes them more reactive than alkanes.
Why are alkenes used for producing other chemicals, such as polymers?
Alkenes have a double bond that allows for further reactions.
What property of cracked products makes them useful as fuels?
Shorter chains
In balancing equations for cracking, why is it important to ensure the same number of carbons and hydrogens on each side of the equation?
To conserve mass
What does it mean when going from a bigger molecule to usually two smaller molecules in cracking?
The reaction is endothermic.
If the cracking reaction equation is: C₆H₁₄ → C₂H₄ + ?, what product would complete this equation?
C₄H₁₀
Learn about how fractions are processed to produce fuels and feedstock for the petrochemical industry, which includes important fuels like petrol, diesel oil, and kerosene, as well as materials crucial for modern life.
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