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Topics for Today What is in my gasoline? Burning a gallon of gasoline

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Readings for Today 3.6 Quantitative Concepts: Mass 3.7 Quantitative Concepts: Molecules and Moles

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Topics for Wednesday Burning a gallon of gasoline. Where does my gasoline come from?

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Readings for Wednesday 3.6 Quantitative Concepts: Mass 3.7 Quantitative Concepts: Molecules and Moles

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Topics for Friday Exam #2

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Topics for Monday Greenhouse Earth!

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Topics for Today What is in my gasoline? Burning a gallon of gasoline

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What is in my gasoline?

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines.

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. What is volatile?

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N 2 + O 2 2NO NO + O 2 +. OH + VOCs NO 2 + VOCs high temp VOC = Volatile Organic Compounds Easily goes into the vapor phase Contains C

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Some VOCs Methane (1 carbon) Ethane (2 carbons) Propane (3 carbons) Butane (4 carbons) Octane (8 carbons)

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. What is volatile? A barrel Liquid Vapor

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. What is a mixture?

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Matter MixturesPure Substances Compounds Elements HeterogeneousHomogeneous Is gasoline heterogeneous or homogenous?

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. What is flammable?

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Complete combustion of methane CH 4 + 2O 2 CO 2 + 2H 2 O Undergoes combustion !

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. What is a hydrocarbon?

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Paraffin is a hydrocarbon -C -C-HH-C HHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHH

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. What is a hydrocarbon? A molecule that contains ONLY carbon and hydrogen atoms.

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Some hydrocarbons Methane Ethane Propane Butane Octane

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Some hydrocarbons Methane Ethane Propane Butane Octane

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Gasoline A volatile mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used principally as a fuel for internal-combustion engines. Gasoline is a mixture (homogeneous) of over 300 different compounds!!

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Whats in my gasoline? n-alkanes (straight chain) iso-alkanes (branched) Cycloalkanes Alkenes and Alkynes Aromatics 15-25% 20-30%