Properties and Uses of Unsaturated Hydrocarbons, , Chemistry B: Properties and Uses of Unsaturated Hyrdocarbons
What is the name for this molecule? nonene nonane 1-octyne 1-octene
1-octene
Use the drop-down menus to name the following structures.
2-butyne cis-2-pentene trans-3-decene 1-hexyne
What is the name for this molecule?
3-hexyne
What is the name for this molecule? 3-heptyne 3-heptene 3-hexyne 3-hexene
3-hexyne
What is the name for this molecule? mc012-1.jpg
3-hexyne
Use the drop-down menus to answer the questions. What would be a reasonable value for the vapor pressure of 1-heptene at 100°C?
800 mm Hg
Which is a property of alkynes?
Alkynes tend to be acidic.
Which of the molecules below is propyne?
D
Rubber is manufactured from latex that is produced from rubber trees. Which statement about rubber is true?
It is made from the polymerization of a long chain of alkene molecules.
Compare the boiling points of 1-pentyne and 1-octyne. Compare the vapor pressure curves of 1-butene and 1-heptene. Explain your reasoning.
The boiling point of 1-octyne is higher than 1-pentyne.
On a piece of paper, draw the structure of 3-heptyne. Now describe the structure you have drawn:
The structure has 7 carbons. 3 is the first carbon in the triple bond.
Name each of the three types of unsaturated hydrocarbons, summarize their structural differences, and give an everyday source of each.
The three types of unsaturated hydrocarbons are alkenes, alkynes, and aromatic hydrocarbons. Alkenes contain at least one double bond, alkynes contain at least one triple bond, and aromatic hydrocarbons contain one or more benzene rings. Sources of alkenes include margarine and rubber; a source of alkyne is acetylene fuel in welding torches; and sources of aromatic hydrocarbons are polystyrene and aspirin.
Name each of the three types of unsaturated hydrocarbons, summarize their structural differences, and give an everyday source of each.
The three types of unsaturated hydrocarbons is alkynes, alkenes, and aromatic hydrocarbons.
On a piece of paper, draw the structure of cis-4-nonene. Now describe the structure you have drawn:
The two groups are bonded to different carbons in a double bond in the same orientation. There are nine carbons. The fourth carbon is the first carbon in the double bond.
Which is a property of both alkenes and alkynes?
Their boiling points tend to increase with chain length.
Which property is characteristic of alkenes, alkynes, and aromatic hydrocarbons?
Their densities are lower than the density of wate
How are the vapor pressure and boiling point of alkynes affected as the chain length increases?
Vapor pressure decreases, and boiling point increases.
Consider the four hydrocarbons in the table below. One is an alkyne, and the other three are alkenes. If these hydrocarbons were similar in size, which one would most likely be an alkyne?
W
Consider the four hydrocarbons in the table below. One is an alkyne, and the other three are alkenes. Hydrocarbon Boiling point (°C) W -23 X -103.7 Y -75 Z -47 If these hydrocarbons were similar in size, which one would most likely be an alkyne?
W
Plant oils are made up of small organic molecules that are called terpenes. The compound below is an example of one type of terpene. mc026-1.jpg Which best describes this compound?
a naturally occurring, branched-chain alkene
Which is composed of alkynes?
acetylene
Select the structure corresponding to trans-3-octene.
b
Which of the molecules below is propyne?
d
Consider the hydrocarbon below. What is the name of this hydrocarbon?
ethene
Consider the hydrocarbon below. What is the name of this hydrocarbon?
ethene.
Identify the graph at right that best represents the trend in alkyne boiling point as a function of carbon chain length.
graph a
Identify the graph that best represents the trend in alkene boiling point as a function of carbon chain length.
graph a
Which of the molecules below is propyne?
https://media.education2020.com/evresources/3210-12-03/mc013-4.jpg
Which product is made up of fatty acids that are derived from alkenes?
margarine
Which product is made up of fatty acids that are derived from alkenes?
margarine.
Which is composed of aromatic hydrocarbons?
pain relievers
Which is composed of aromatic hydrocarbons?
pain relievers.
Use the drop-down menus to answer the questions. Where would the points for 1-pentene be expected to fall?
to left of black points
