A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) The temperature of the water bath is monitored, and it is determined from this data that 198. kJ of heat flows out of the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the system does 214. kJ of work on the piston during the reaction. Is the reaction exothermic or endothermic? Does the temperature of the water bath go up or down? Does the piston move in or out? Does the reaction absorb or release energy? How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits. O exothermic O endothermic Oup Odown Oneither O in O out Oneither O absorb O release O neither 0 x10 X Ś 1 atm pressure gases piston cylinder water bath
A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) The temperature of the water bath is monitored, and it is determined from this data that 198. kJ of heat flows out of the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the system does 214. kJ of work on the piston during the reaction. Is the reaction exothermic or endothermic? Does the temperature of the water bath go up or down? Does the piston move in or out? Does the reaction absorb or release energy? How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits. O exothermic O endothermic Oup Odown Oneither O in O out Oneither O absorb O release O neither 0 x10 X Ś 1 atm pressure gases piston cylinder water bath
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:**Educational Text Transcription:**
A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.)
The temperature of the water bath is monitored, and it is determined from this data that 198 kJ of heat flows out of the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the system does 214 kJ of work on the piston during the reaction.
**Questions:**
1. Is the reaction exothermic or endothermic?
- ☐ exothermic
- ☐ endothermic
2. Does the temperature of the water bath go up or down?
- ☐ up
- ☐ down
- ☐ neither
3. Does the piston move in or out?
- ☐ in
- ☐ out
- ☐ neither
4. Does the reaction absorb or release energy?
- ☐ absorb
- ☐ release
- ☐ neither
5. How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits.
- ☐ __________ kJ
**Diagram Explanation:**
The diagram shows a cylinder submerged in a water bath. Inside the cylinder is a piston, which maintains a pressure of 1 atm on the gases. The components labeled in the diagram are:
- Piston
- Cylinder
- Gases
- Water bath
There's also a thermometer indicating the temperature within the setup.
Expert Solution
Step 1: Interpretation of given data
Given : heat flows out of the system, Q = -198 KJ where negative sign of heat indicates it is released ( flows out ) by the system.
Work done by the system on piston, W = -214 KJ where -ve sign indicates that work is done by the system.
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