Quiz Solutions
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Re: Quiz Solutions
Quiz 1 answers as previously posted by Dr. Lavelle
1. ΔU = 310 J
2. ΔU = 0 kJ
3. w = –5.48 kJ
q = +5.48 kJ
ΔU = 0
4. +29.5 kJ⋅mol-1
5. N2H4(l) + H2(g) → 2NH3(g) –151 kJ⋅mol-1
6. 51.2 g
7. 2 and 3
8. no temperature
9. ΔG and ΔSsys
10. +0.683 J⋅K-1
11. 75.9 g
12. 2Fe2O3(s) + 3C(s, graphite) → 4Fe(s) + 3CO2(g)
301 kJ/mol
1. ΔU = 310 J
2. ΔU = 0 kJ
3. w = –5.48 kJ
q = +5.48 kJ
ΔU = 0
4. +29.5 kJ⋅mol-1
5. N2H4(l) + H2(g) → 2NH3(g) –151 kJ⋅mol-1
6. 51.2 g
7. 2 and 3
8. no temperature
9. ΔG and ΔSsys
10. +0.683 J⋅K-1
11. 75.9 g
12. 2Fe2O3(s) + 3C(s, graphite) → 4Fe(s) + 3CO2(g)
301 kJ/mol
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Re: Quiz Solutions
Quiz 2 Answers
1. 2 N2O5(g) → 4 NO2(g) + O2(g)
5.78 (mol NO2)⋅L–1⋅s–1
2. False
3. 2 N2O(g) → 2N2(g) + O2(g)
120 sec
4. first-order
2.00 s–1
5. has a rate that does not change much with temperature.
6. 0.30 M
7. 9.88×10−3 min−1 or 1.65 ×10−4 s−1
8. 6.06 min
9. D
10. false
11. 100 min−1
1. 2 N2O5(g) → 4 NO2(g) + O2(g)
5.78 (mol NO2)⋅L–1⋅s–1
2. False
3. 2 N2O(g) → 2N2(g) + O2(g)
120 sec
4. first-order
2.00 s–1
5. has a rate that does not change much with temperature.
6. 0.30 M
7. 9.88×10−3 min−1 or 1.65 ×10−4 s−1
8. 6.06 min
9. D
10. false
11. 100 min−1
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Re: Quiz Solutions
Quiz 3 Preparation Answers
1. 4-isopropyldecane or 4-(1-methylethyl) decane
2. Draw hexane structure with ethyl and methyl both attached to carbon 3 in hexane main chain.
3. Alkenes not covered in your Quiz 3. Your Quiz 3 covers more Kinetics.
4. 4-butyl-1,2-dimethylcyclohexane
5.
What type of reaction is shown above?
ELECTROPHILIC ADDITION REACTION
How many steps are involved?
2 steps
How many transition states?
2
Which is the rate limiting step?
1st step
How many intermediates are there?
2
6. Both are nucleophiles.
7. 2,3-dichlorobutane
8. Br2 acts as an electrophile.
1. 4-isopropyldecane or 4-(1-methylethyl) decane
2. Draw hexane structure with ethyl and methyl both attached to carbon 3 in hexane main chain.
3. Alkenes not covered in your Quiz 3. Your Quiz 3 covers more Kinetics.
4. 4-butyl-1,2-dimethylcyclohexane
5.
What type of reaction is shown above?
ELECTROPHILIC ADDITION REACTION
How many steps are involved?
2 steps
How many transition states?
2
Which is the rate limiting step?
1st step
How many intermediates are there?
2
6. Both are nucleophiles.
7. 2,3-dichlorobutane
8. Br2 acts as an electrophile.
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Re: Quiz Solutions
syun3c wrote:Are there solutions to the quizzes we took in class? Not the quiz preps.
nope, you'll have to search for some on chem community with key words. not all are there.
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