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Which compound is classified as a hydrocarbon?*
Which formula represents an unsaturated hydrocarbon?*
Which compound is saturated?*
How many pairs of electrons are shared between two adjacent carbon atoms in a saturated hydrocarbon?*
Hydrocarbons are composed of the elements*
Which hydrocarbon is saturated?*
Which formula represents a hydrocarbon?*
Base your answers to questions 10 on the information below.
Two hydrocarbons that are isomers of each other are represented by the structural formulas and molecular formulas below.
Explain, in terms of bonds, why these hydrocarbons are unsaturated.*
Base your answers to questions 11 on the information below.
The equation below represents the reaction between 1-butene and bromine to form the compound 1,2-dibromobutane, C4H8Br2.
Explain, in terms of bonding, why the hydrocarbon reactant is an unsaturated hydrocarbon.*
Base your answers to questions 12 on the information below and on your knowledge of chemistry.
The diagrams below represent ball-and-stick models of two molecules. In a ball-and-stick model, each ball represents an atom, and the sticks between balls represent chemical bonds.
Explain, in terms of carbon-carbon bonds, why the hydrocarbon represented in diagram B is saturated.*
Base your answers to questions 13 on the information below and on your knowledge of chemistry.
Natural gas and coal are two fuels burned to produce energy. Natural gas consists of approximately 80% methane, 10% ethane, 4% propane, 2% butane, and other components.
The burning of coal usually produces sulfur dioxide, SO2(g), and sulfur trioxide, SO3(g), which are major air pollutants. Both SO2(g) and SO3(g) react with water in the air to form acids.
Write the general formula for the homologous series that includes the components of the natural gas listed in this passage.*
Base your answers to questions 14 on the information below and on your knowledge of chemistry.
Crude oil, primarily a mixture of hydrocarbons, is separated into useful components in a fractionating tower. At the bottom of the tower, the crude oil is heated to about 400°C. The gases formed rise and cool. Most of the gases condense and are collected as liquid fractions. The table below shows the temperature ranges for collecting various hydrocarbon fractions.
Determine the number of carbon atoms in one molecule of an alkane that has 22 hydrogen atoms in the molecule.*
Base your answers to questions 15 on the information below and on your knowledge of chemistry.
There are several isomers of C6H14. The formulas and boiling points for two of these isomers are given in the table below.
Identify the homologous series to which these isomers belong.*
