C9-Crude Oils And Fuels
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Formula for Alkanes
Cn H2n+2
First 4 Alkanes
Methane Ethane Propane Butane
What is an alkane?
A saturated hydrocarbon with the general formula CₙH₂ₙ₊₂,
What is an alkene?
Unsaturated hydrocarbon, which contains a carbon-carbon double bond. Its general formula is CₙH₂ₙ, for example, ethene C₂H₄
What is cracking?
the reaction used in the oil industry to break down long-chain hydrocarbons into shorter-chain, more useful hydrocarbons
What is distillation?
A way to separate liquids from a mixture of liquids by boiling off the substances at different temperatures, then condensing and collecting the liquids
What is a double bond?
A covalent bond made by the sharing of 2 pairs of electrons
What does flammable mean?
easily ignited and capable of burning rapidly
What is a fraction?
Hydrocarbons with similar number of carbon atoms and boiling points separated from crude oil
What is a hydrocarbon?
A compound containing only hydrogen and carbon
What is a mixture?
a substance that contains 2 or more elements that are not chemically bonded together
What is a saturated hydrocarbon?
A hydrocarbon with only single bonds between its carbon atoms. This means that it contains as many hydrogen atoms as possible in each molecule
What is an unsaturated hydrocarbon?
A hydrocarbon whose molecules contain at least 1 carbon-carbon double bond
What does viscosity mean?
The resistance of a liquid to flowing or pouring; a liquids “thickness”
What does volatility mean?
how readily a substance vaporizes
What is the molecular formula of Methane?
CH₄
What is the molecular formula of Ethane?
C₂H₆
What is the molecular formula for Propane?
C₃H₈
What is the molecular formula for Butane?
C₄H₁₀
What is a homologous series?
a group of organic compounds with similar chemical properties who share the same general formula.
What is complete combustion?
When a hydrocarbon burns in the maximum amount of oxygen to form water and carbon dioxide
What type of reaction is complete combustion?
An oxidation reaction as the hydrocarbons gain oxygen and lose electrons. It is also an exothermic reaction as energy is released to the surroundings during the reaction
What is the equation for methane undergoing complete combustion?
CH₄(g) + 2O₂(g) -> CO₂(g) + 2H₂O(g)
What is the equation for ethane undergoing complete combustion?
2C₂H₆(g) + 7O₂(g) -> 4CO₂(g) + 6H₂O(g)