Organic Chemistry Flashcards
What’s a hydrocarbon
A compound made from hydrogen and carbon only
How’s a crude oil formed
Ancient biomass that has been subjected to heat and pressure over millions of years
What’s an alkane
Hydrocarbons containing only single C to C bonds
First 4 alkanes
Methane
Ethane
Propane
Butane
General formula for alkanes
CnH2n+2
Explain the relationship between carbon chain length and boiling point for organic molecules
Long chain length means higher boiling point as the strength of the intermolecular forces increase this means more energy is needed to separate the molecules
How does viscosity depend on carbon chain length
The longer the chain, the more viscous the compound
How does flammability depend on carbon chain length
The longer the chain the less flammable the compound
How are alkanes in crude oil separated
Fractional distillation
5 useful products from crude oil
Fuel
Lubricants
Detergents
Polymers
Solvents
Cracking
Breaking down large hydrocarbons into smaller ones
Conditions for cracking?
High temp and steam
Or a catalyst
What are the products of cracking
Smaller chain alkanes and Alkenes
What are alkenes?
Hydrocarbons that contain at least one C=C double bond
General formula for alkenes
CnH2n