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.

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.

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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Question

Gr13

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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Step 1: Determination of molar enthalpy from calorimeter.

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Step 2: Doubling the volume keeping concentration constant.

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