Regents Chemistry Test Preparation Practice

    Functional Groups And Types Of Organic Compounds

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    Base your answers to questions 6 on the information below and on your knowledge of chemistry.

    Ethyl ethanoate is used as a solvent for varnishes and in the manufacture of artifi cial leather. The formula below represents a molecule of ethyl ethanoate.

    organic-compounds fig: chem62019-exam_g16.png

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    Base your answers to questions 8 on the information below and on your knowledge of chemistry.

    Fatty acids, a class of compounds found in living things, are organic acids with long hydrocarbon chains. Linoleic acid, an unsaturated fatty acid, is essential for human skin flexibility and smoothness. The formula below represents a molecule of linoleic acid.

    formulas fig: chem62018-exam_g26.png

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    Base your answers to questions 9 on the information below and your knowledge of chemistry.

    Methanol can be manufactured by a reaction that is reversible. In the reaction, carbon monoxide gas and hydrogen gas react using a catalyst. The equation below represents this system at equilibrium.

    CO(g) + 2H2(g) ⇌ CH3OH(g) + energy

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    Base your answers to questions 11 on the information below and on your knowledge of chemistry.

    Polyvinyl chloride (PVC) is a polymer used to make drain pipes, flooring, electric wire insulation, and some plastic bottles. Making PVC requires several reactions. The first step is represented by the equation below.

    hydrocarbons fig: chem12018-exam_g18.png

    The 1,2-dichloroethane is converted to vinyl chloride. To produce PVC, the vinyl chloride monomer is polymerized, as represented by the equation below.

    hydrocarbons fig: chem12018-exam_g19.png

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    Base your answers to questions 12 on the information below and on your knowledge of chemistry.

    The equation below represents the reaction between 2-methylpropene and hydrogen chloride gas.

    hydrocarbons fig: chem82017-exam_g16.png

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    Base your answers to questions 13 on the information below and on your knowledge of chemistry.

    Molecules containing two carbon atoms and a functional group have many home and industrial uses. These compounds can be produced by a variety of reactions, as shown by the equations below.

    Equation 1: C2H4 + H2O → CH3CH2OH

    Equation 2: 2CH3CH2OH + O2 → 2CH3CHO + 2H2O

    Equation 3: 2CH3CHO + O2 → 2CH3COOH

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    Base your answers to questions 14 on the information below and on your knowledge of chemistry.

    In industry, ethanol is primarily produced by two different reactions. One process involves the reaction of glucose in the presence of an enzyme that acts as a catalyst. The equation below represents this reaction.

    organic-compounds fig: chem82016-exam_g17.png

    In another reaction, ethanol is produced from ethene and water. The equation below represents this reaction in which H2SO4 is a catalyst.

    organic-compounds fig: chem82016-exam_g18.png

    Industrial ethanol can be oxidized using a catalyst to produce ethanal. The equation representing this oxidation is shown below.

    organic-compounds fig: chem82016-exam_g19.png

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    Base your answers to questions 15 on the information below and on your knowledge of chemistry.

    The equation below represents a reaction between propene and hydrogen bromide.

    chemical-reactions-and-equations fig: chem82016-exam_g13.png

    Cyclopropane, an isomer of propene, has a boiling point of –33ºC at standard pressure and is represented by the formula below.

    chemical-reactions-and-equations fig: chem82016-exam_g14.png

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