A chemical engineer is studying the following reaction: HCN(aq)+ NH,(aq) CN (aq)+NH,(aq) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 0.83, The engineer charges ("fills") four reaction vessels with hydrogen cyanide and ammonia, and lets the reaction begin. He then measures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time he measures the compositions. reaction vessel compound concentration expected change in concentration HCN 0.48 M O T increase Ol decrease O (no change) NH, 0.40 M O f increase OI decrease O (no change) CN 0.89 M O t increase OI decrease O (no change) NH, 0 98 M O t increase OI decrease O (no change) HCN 106 M O increase O decrease O (no change) NH, 0 95 M O fimerease OI decrease O (no change) CN 085 M O increase Ou decrease O (no change) NH, 0 98 M Aincrease OI decrease O (no change) HCN 037 M 0 ncruase decrease O (no change) NH, 0 29 M Oerease 0. decrease O (no change) CN 100 M O t inrease derease NH, 1 09 M decreaE e dange) Explanation Check
A chemical engineer is studying the following reaction: HCN(aq)+ NH,(aq) CN (aq)+NH,(aq) At the temperature the engineer picks, the equilibrium constant K, for this reaction is 0.83, The engineer charges ("fills") four reaction vessels with hydrogen cyanide and ammonia, and lets the reaction begin. He then measures the composition of the mixture inside each vessel from time to time. His first set of measurements are shown in the table below. Predict the changes in the compositions the engineer should expect next time he measures the compositions. reaction vessel compound concentration expected change in concentration HCN 0.48 M O T increase Ol decrease O (no change) NH, 0.40 M O f increase OI decrease O (no change) CN 0.89 M O t increase OI decrease O (no change) NH, 0 98 M O t increase OI decrease O (no change) HCN 106 M O increase O decrease O (no change) NH, 0 95 M O fimerease OI decrease O (no change) CN 085 M O increase Ou decrease O (no change) NH, 0 98 M Aincrease OI decrease O (no change) HCN 037 M 0 ncruase decrease O (no change) NH, 0 29 M Oerease 0. decrease O (no change) CN 100 M O t inrease derease NH, 1 09 M decreaE e dange) Explanation Check
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:A chemical engineer is studying the following reaction:
HCN(aq)+NH,(aq) CN (aq)+NH,(aq)
At the temperature the engineer picks, the equilibrium constant K, for this reaction is 0.83,
The engineer charges ("fills") four reaction vessels with hydrogen cyanide and ammonia, and lets the reaction begin. He then measures the composition of the
mixture inside each vessel from time to time. His first set of measurements are shown in the table below.
Predict the changes in the compositions the engineer should expect next time he measures the compositions.
reaction
vessel
compound
concentration
expected change in concentration
HCN
0.48 M
O f increase
Ol decrease
O (no change)
NH,
0.40 M
O f increase
OI decrease
O (no change)
CN
0.89 M
O t increase
OI decrease
O (no change)
NH,
0 98 M
O t increase
OI decrease
O (no change)
HCN
106 M
O Iincrease
O decrease
O (no change}
NH,
0 95 M
O f increase
OI decrease
O (no change)
CN
O 85 M
Oincrease
OI decrease
O (no change)
NH,
0 98 M
Aincrease
O decrease
O (no change)
HCN
037 M
01 ncruase
decrease
O (no change)
NH,
0 29 M
Orerease
O decrease
O (no change)
CN
100 M
O decrease
NH,
109 M
O fincras
decreas
dhange)
Explanation
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20MG H Edaten All end s of tise i P yI Ace
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