Three solutions, all originally at 20°C, are combined in a calorimeter. The temperature of the reaction mixture is monitored, as show in the graph below. 34.0 32.0 30.0 28.0- 26.0 24.0- 22.0- 20.0 18.0- Time Ms. Prohaska repeats the same experiment, but this time she doubles the volume of each reactant, but keeps the concentration the same as in trial one. The magnitude of the molar enthalpy change calculated from the results of a second experiment is the same as the result calculated from the first experiment. Explain this result.

General, Organic, and Biological Chemistry
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Chapter9: Chemical Reactions
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Problem 9.68EP: The following series of diagrams represent the reaction XY followed over a period of time. The X...
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Three solutions, all originally at 20°C, are combined in a calorimeter. The temperature of the reaction
mixture is monitored, as show in the graph below.
Temperature (°C)
34.0-
32.0-
30.0-
28.0-
26.0-
24.0-
22.0-
20.0-
18.0
Time
Ms. Prohaska repeats the same experiment, but
this time she doubles the volume of each
reactant, but keeps the concentration the same
as in trial one.
The magnitude of the molar enthalpy change
calculated from the results of a second
experiment is the same as the result calculated
from the first experiment. Explain this result.
Transcribed Image Text:Three solutions, all originally at 20°C, are combined in a calorimeter. The temperature of the reaction mixture is monitored, as show in the graph below. Temperature (°C) 34.0- 32.0- 30.0- 28.0- 26.0- 24.0- 22.0- 20.0- 18.0 Time Ms. Prohaska repeats the same experiment, but this time she doubles the volume of each reactant, but keeps the concentration the same as in trial one. The magnitude of the molar enthalpy change calculated from the results of a second experiment is the same as the result calculated from the first experiment. Explain this result.
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