9.5-Bond Dissociation Enthalpies
Chapter

Dr. Robert E. Belford




Question 1
Which bond has the largest dissociation energy?
S-F, S-Cl, & S-Br

(A)  S-F
(B)  S-Cl
(C)  S-Br
(D)  the are all the same
 
Hint

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Question 2
Which bond is the weakest between C and N?
a single bond, a double bond or a triple bond

(A)  single
(B)  double
(C)  triple
(D)  they ae the same
 
Hint

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Question 3
Which bond has the shortest bond length? C-N, C=N or C=N.
(A)  C-N
(B)  C=N
(C)  C=N
(D)  They are the same.
 

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Question 4
Using bond dissociation energies, determine the enthalpy of combuston for propane (CH3CH2CH3).

(A)  -1593 KJ/mol
(B)  1593 KJ/mol
(C)  -1602 KJ/mol
(D)  1550 KJ/mol
 
Hint

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