Question 1

Which one of the following properties is least characteristic of typical ionic compounds?

Accepted Answer

A)   high melting point
B)   high boiling point
C)   brittleness
D)   poor electrical conductor when solid
E)   poor electrical conductor when moltenF) C) and E)
G) A) and D)

Question 2

Arrange oxygen, sulfur, calcium, rubidium and potassium in order of decreasing electronegativity.

Accepted Answer

A)   O > S > Ca > K > Rb
B)   O > S > Ca > Rb > K
C)   O > S > Rb > K > Ca
D)   O > S > Rb > Ca > K
E)   None of these choices is correct.F) A) and B)
G) A) and E)

Question 3

Select the correct formula for a compound formed from calcium and chlorine.

Accepted Answer

A)   CaCl
B)   CaCl2
C)   Ca2Cl
D)   Ca2Cl2
E)   CaCl3F) A) and E)
G) A) and D)

Question 4

The stronger the bonds in a fuel, the more energy it will yield.

Accepted Answer

A) True 
 B)False

Question 5

Using appropriate, real examples to illustrate your answer, describe the correlation between bond energy and bond length for a series of single bonds.

Accepted Answer

The bonds between carbon, C, and the hal...

Question 6

Acetone can be easily converted to isopropyl alcohol by addition of hydrogen to the carbon-oxygen double bond. Calculate the enthalpy of reaction using the bond energies given.

Accepted Answer

A)   -484 kJ
B)   -366 kJ
C)   -48 kJ
D)   +48 kJ
E)   +366 kJF) A) and E)
G) All of the above

Question 7

The lattice energy of large ions is greater in magnitude than that of small ions of the same charge.

Accepted Answer

A) True 
 B)False

Question 8

In not more than three sentences, describe the electron arrangement responsible for bonding in Cl2 molecules.

Accepted Answer

This is covalent bonding. The chlorine a...

Question 9

Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ)  the standard enthalpy change ?H  °\degree° for the hydrogenation of ethyne (acetylene)  to ethane.

Accepted Answer

A)   -296 kJ
B)   -51 kJ
C)   51 kJ
D)   296 kJ
E)   381 kJ F) None of the above
G) C) and D)

Question 10

For which of the following elements (in their normal, stable, forms)  would it be correct to describe the bonding as involving "electron pooling"?

Accepted Answer

A)   hydrogen
B)   helium
C)   sulfur
D)   iodine
E)   aluminumF) B) and E)
G) B) and D)

Question 11

Most of the copper sold in major metal markets is highly purified, typically to 99.99%. Why is this?

Accepted Answer

The main use of copper is as a...

Question 12

Ionic bonding typically occurs when a ______________ bonds with a ______________.

Accepted Answer

The answer of Ionic bonding typically occurs when a ______________...

Question 13

Which of the following is a covalent compound?

Accepted Answer

A)   Na2O
B)   CaCl2
C)   Cl2O
D)   CsCl
E)   Al2O3F) All of the above
G) A) and B)

Exam 9: Models of Chemical Bonding

Which of the following is a covalent compound?

Correct Answer
verified

The lattice energy of large ions is greater in magnitude than that of small ions of the same charge.

Correct Answer
verified

Correct Answer
verified

Using appropriate, real examples to illustrate your answer, describe the correlation between bond energy and bond length for a series of single bonds.

Correct Answer
verified
The bonds between carbon, C, and the hal...
View Answer

In not more than three sentences, describe the electron arrangement responsible for bonding in Cl₂ molecules.

Correct Answer
verified
This is covalent bonding. The chlorine a...
View Answer

Select the correct formula for a compound formed from calcium and chlorine.

Correct Answer
verified

Acetone can be easily converted to isopropyl alcohol by addition of hydrogen to the carbon-oxygen double bond. Calculate the enthalpy of reaction using the bond energies given.

Correct Answer
verified

The stronger the bonds in a fuel, the more energy it will yield.

Correct Answer
verified

For which of the following elements (in their normal, stable, forms) would it be correct to describe the bonding as involving "electron pooling"?

Correct Answer
verified

Arrange oxygen, sulfur, calcium, rubidium and potassium in order of decreasing electronegativity.

Correct Answer
verified

Most of the copper sold in major metal markets is highly purified, typically to 99.99%. Why is this?

Correct Answer
verified
The main use of copper is as a...
View Answer

Ionic bonding typically occurs when a bonds with a .

Correct Answer
verified

Which one of the following properties is least characteristic of typical ionic compounds?

Correct Answer
verified

Exam 9: Models of Chemical Bonding

Which of the following is a covalent compound?

Correct AnswerverifiedShow Answer

The lattice energy of large ions is greater in magnitude than that of small ions of the same charge.

Correct AnswerverifiedShow Answer

Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ) the standard enthalpy change ?H °\degree° for the hydrogenation of ethyne (acetylene) to ethane.

Correct AnswerverifiedShow Answer

Using appropriate, real examples to illustrate your answer, describe the correlation between bond energy and bond length for a series of single bonds.

Correct AnswerverifiedThe bonds between carbon, C, and the hal...View AnswerShow Answer

In not more than three sentences, describe the electron arrangement responsible for bonding in Cl2 molecules.

Correct AnswerverifiedThis is covalent bonding. The chlorine a...View AnswerShow Answer

Select the correct formula for a compound formed from calcium and chlorine.

Correct AnswerverifiedShow Answer

Acetone can be easily converted to isopropyl alcohol by addition of hydrogen to the carbon-oxygen double bond. Calculate the enthalpy of reaction using the bond energies given.

Correct AnswerverifiedShow Answer

The stronger the bonds in a fuel, the more energy it will yield.

Correct AnswerverifiedShow Answer

For which of the following elements (in their normal, stable, forms) would it be correct to describe the bonding as involving "electron pooling"?

Correct AnswerverifiedShow Answer

Arrange oxygen, sulfur, calcium, rubidium and potassium in order of decreasing electronegativity.

Correct AnswerverifiedShow Answer

Most of the copper sold in major metal markets is highly purified, typically to 99.99%. Why is this?

Correct AnswerverifiedThe main use of copper is as a...View AnswerShow Answer

Ionic bonding typically occurs when a ______________ bonds with a ______________.

Correct AnswerverifiedShow Answer

Which one of the following properties is least characteristic of typical ionic compounds?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The bonds between carbon, C, and the hal...
View Answer

In not more than three sentences, describe the electron arrangement responsible for bonding in Cl₂ molecules.

Correct Answer
verified
This is covalent bonding. The chlorine a...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The main use of copper is as a...
View Answer

Ionic bonding typically occurs when a bonds with a .

Correct Answer
verified

Correct Answer
verified