3. Carbon monoxide reacts with water to form carbon dioxide and hydrogen according to the reaction CO(g) + H₂O(1) ⇒ CO₂(g) + H₂(g) 4.9 4.7 4.5 slope = -342.8 K The equilibrium constant for this reaction was measured at several temperatures and was found to follow the straight line shown in the graph. One point on the curve is In K = 4.885 where 1/T = 0.002857 K¹. The slope of the line is indicated by the line in the graph.

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Chapter1: Chemical Foundations
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3. Carbon monoxide reacts with water to form carbon dioxide and hydrogen according to the reaction
CO(g) + H₂O(1) CO₂(g) + H₂(g)
In K
4.9
4.7
4.5
4.3
0.0027
slope = -342.8 K
0.0031
0.0035
1/T (K¹)
a) Calculate the value of AH° for this reaction.
The equilibrium constant for this reaction
was measured at several temperatures and
was found to follow the straight line shown
in the graph.
One point on the curve is In K = 4.885 where
1/T = 0.002857 K¹¹. The slope of the line is
indicated by the line in the graph.
b) Calculate the value of the equilibrium constant for this reaction at T = 298.15 K.
c) What is the value of AGº for this reaction? Does it differ from the AGO for the same reaction?
Justify.
d) Without doing any calculations could you tell if the value of for ASº this reaction is positive or
negative? Explain.
e) In order to make this reaction more favorable, should one increase or decrease the pressure?
Explain your answer.
Transcribed Image Text:3. Carbon monoxide reacts with water to form carbon dioxide and hydrogen according to the reaction CO(g) + H₂O(1) CO₂(g) + H₂(g) In K 4.9 4.7 4.5 4.3 0.0027 slope = -342.8 K 0.0031 0.0035 1/T (K¹) a) Calculate the value of AH° for this reaction. The equilibrium constant for this reaction was measured at several temperatures and was found to follow the straight line shown in the graph. One point on the curve is In K = 4.885 where 1/T = 0.002857 K¹¹. The slope of the line is indicated by the line in the graph. b) Calculate the value of the equilibrium constant for this reaction at T = 298.15 K. c) What is the value of AGº for this reaction? Does it differ from the AGO for the same reaction? Justify. d) Without doing any calculations could you tell if the value of for ASº this reaction is positive or negative? Explain. e) In order to make this reaction more favorable, should one increase or decrease the pressure? Explain your answer.
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