EQUILIBRIUM & ACID & BASES MULTIPLE CHOICE 18. At 11 minutes the reaction vessel was heated. The reaction represented in thegraph for the second step in the Ostwald Process isof Kcand the valueiidue to heating the reaction vessel.The statement above is best completed by the answers in row.Rowiiiexothermicdecreasesendothermic increasesendothermicdecreasesexothermicincreases19. Which row best describes the rates of the forward and reverse reactions at 14minutes.The statement above is best completed by the answers in row.Row Rate of the Forward Reaction Rate of the Reverse ReactionincreasesdecreasesunchangedunchangedunchangedincreasesincreasesunchangedUse the following additional information to answer the next questionThe final step in the Ostwald process is the production of nitric acid, as representedby the following reaction3 NO2(g) + H20(1) 2 HNO3(aq) + NO(g)20In the roaction roproconting the lact ston in the Octwald Drocoss the viold of nitricOlololoO000 The second step in the Ostwald Process is represented by the following reaction.2 NO(g) + O2(g) = 2 NO2(g)This reaction was studied in a closed system and the component concentrations areshown in the graph below.5.00NO4.003.002.00NO,1.00oi 2 3 4 36 i 8 9 10 11 12 13 14 15 16Time (min)17. In the study of the reaction represented in the graph, equilibrium was firstestablished atO 5 minO 12 minO 4 min11 minConcentration (mol/L.)

17. At equilibrium, the concentration of the species in the reaction becomes constant, From the…

The second step in the Ostwald Process is represented by the following reaction. 2 NO(g) + O2(g) = 2 NO2(g) This reaction was studied in a closed system and the component concentrations are shown in the graph below. 5.00 NO 4.00 3.00 2.00 1.00 oi 2 3 4 s 6i8 9 10 ii 12 13 14 i5 16 Time (min) 17. In the study of the reaction represented in the graph, equilibrium was first established at O 5 min 12 min O 4 min O 11 min Concentration (mol/L)

The second step in the Ostwald Process is represented by the following reaction. 2 NO(g) + O2(g) = 2 NO2(g) This reaction was studied in a closed system and the component concentrations are shown in the graph below. 5.00 NO 4.00 3.00 2.00 1.00 oi 2 3 4 s 6i8 9 10 ii 12 13 14 i5 16 Time (min) 17. In the study of the reaction represented in the graph, equilibrium was first established at O 5 min 12 min O 4 min O 11 min Concentration (mol/L)

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.91PAE

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Question

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EQUILIBRIUM & ACID & BASES

MULTIPLE CHOICE

18. At 11 minutes the reaction vessel was heated. The reaction represented in the
graph for the second step in the Ostwald Process is
of Kc
and the value
ii
due to heating the reaction vessel.
The statement above is best completed by the answers in row.
Row
i
ii
exothermic
decreases
endothermic increases
endothermic
decreases
exothermic
increases
19. Which row best describes the rates of the forward and reverse reactions at 14
minutes.
The statement above is best completed by the answers in row.
Row Rate of the Forward Reaction Rate of the Reverse Reaction
increases
decreases
unchanged
unchanged
unchanged
increases
increases
unchanged
Use the following additional information to answer the next question
The final step in the Ostwald process is the production of nitric acid, as represented
by the following reaction
3 NO2(g) + H20(1) 2 HNO3(aq) + NO(g)
20
In the roaction roproconting the lact ston in the Octwald Drocoss the viold of nitric
Olololo
O000

The second step in the Ostwald Process is represented by the following reaction.
2 NO(g) + O2(g) = 2 NO2(g)
This reaction was studied in a closed system and the component concentrations are
shown in the graph below.
5.00
NO
4.00
3.00
2.00
NO,
1.00
oi 2 3 4 36 i 8 9 10 11 12 13 14 15 16
Time (min)
17. In the study of the reaction represented in the graph, equilibrium was first
established at
O 5 min
O 12 min
O 4 min
11 min
Concentration (mol/L.)

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