Page 473 - Chemistry eBook

storms. The unbalanced equation below represents the reaction that forms ozone.
68 Explain, in terms of electron configuration, why an oxygen molecule is more stable than
an oxygen atom. [1]
O2(g) electricity O3(g)
66 Balance the equation in your answer booklet for the production of ozone, using the smallest whole-number coefficients. [1]
Base your answers to questions 69 and 70 on the information below.
67 Identify the type of bonding between the atoms in an oxygen molecule. [1]
Data Table
Base your answers to questions 69 and 70 on the information below.
Natural gas is a mixture that includes butane, ethane, methane, and propane. Differences68inExbploainli, ningterpmosinofteslectarnon bcoenfiugusreadtiont,owhsyeapnaorxaytgentmhoelecuolemispmoonrensttasbleotfhan atural gas.
an oxygen atom. [1]
ify a process used to
ural gas. [1]
Sample Regents Questions
The boiling points at standard pressure for these components are listed in the table below.
Natural Gas
The boiling points at standard pressure for these components are listed in the table below.
butane
Component of
ethane
Natural Gas
methane
Data Table
Boiling Point at
Natural gas is a mixture that includes butane, ethane, methane, and propane.
Component of
Differences in boiling points can be used StotasenpdaratredthPerecosmspuonrents of natural gas.
Boiling Point at Standard−P8re8s.s6ure (°C)
−161.6
(°C)
−0.5
69 Ident
P.S./Chem.–June ’11
P.S./Chem.–June ’11
forces. [1]
butane
propane
−0.5
ethane
−42.1
propane
separate the c
−88.6
methane
−161.6
−42.1
omponents of nat
69 Identify a process used to separate the components of natural gas. [1]
70 List the four components of natural gas in order of increasing strength of intermolecular
forces. [1]
70 List the four components of natural gas in order of increasing strength of intermolecular
June 2011 #70
[11]
[OVER]
[11]
[OVER]
Answer: Methane, ethane, propane, butane
Answer
Explanation: The bigger the molecule, the stronger the intermolecular forces. Reffy, Table P (p. 7) shows us that methane is the smallest, ethane is bigger, propane is even bigger, and butane is the biggest of those four molecules listed. The molecules with higher boiling points have stronger bonds.
UNIT 11: ORGANIC CHEMISTRY © 472