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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 111. 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 piston does 348. kJ of work on the system 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? exothermic endothermic up down neither. in out neither absorb release neither 1 atm pressure gases

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 111. 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 piston does 348. kJ of work on the system 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? exothermic endothermic up down neither. in out neither absorb release neither 1 atm pressure gases

Chemistry
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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**Understanding Gaseous Reactions in a Thermally Insulated System** **Introduction:** In this educational module, we explore how gaseous reactants are transformed into gaseous products within a thermally controlled environment and how various factors affect this transformation. **Experiment Setup:** A mixture of gaseous reactants is placed inside a cylinder where they undergo a chemical reaction, turning into gaseous products. This cylinder is equipped with a piston that can move in or out to maintain a constant pressure of 1 atm on the gas mixture. Surrounding the cylinder is a large, insulated water bath intended to provide thermal insulation for the system (See sketch below). **Sketch Explanation:** The diagram accompanying this experiment shows a cylinder containing reactant gases. This cylinder is submerged in an insulated water bath. A piston at the top of the cylinder can move to ensure that the pressure remains constant at 1 atmosphere throughout the reaction. **Data Observations:** 1. **Temperature Changes:** The water bath's temperature is monitored and indicates that 111 kJ of heat is released from the system during the reaction. 2. **Piston Movement:** The position of the piston is monitored to determine the work done by the gas on the system. It is deduced that the piston performs 348 kJ of work. **Questions for Review:** 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 **Conclusion:** This experiment illustrates the relationship between thermal changes and mechanical work within a controlled system undergoing a chemical reaction. Monitoring both heat flow and piston movement provides insights into whether the reaction is exothermic or endothermic and how the energy dynamics within the system operate. **Interactive Component:** Please use the options above to answer the review questions and understand the principles demonstrated in this experiment. After selecting your answers, click 'Check' to validate your understanding. Save your progress by using the 'Save For Later' option available at the bottom right. --- This concludes the module on gaseous reactions in a thermally insulated system. For further reading,
Transcribed Image Text:**Understanding Gaseous Reactions in a Thermally Insulated System** **Introduction:** In this educational module, we explore how gaseous reactants are transformed into gaseous products within a thermally controlled environment and how various factors affect this transformation. **Experiment Setup:** A mixture of gaseous reactants is placed inside a cylinder where they undergo a chemical reaction, turning into gaseous products. This cylinder is equipped with a piston that can move in or out to maintain a constant pressure of 1 atm on the gas mixture. Surrounding the cylinder is a large, insulated water bath intended to provide thermal insulation for the system (See sketch below). **Sketch Explanation:** The diagram accompanying this experiment shows a cylinder containing reactant gases. This cylinder is submerged in an insulated water bath. A piston at the top of the cylinder can move to ensure that the pressure remains constant at 1 atmosphere throughout the reaction. **Data Observations:** 1. **Temperature Changes:** The water bath's temperature is monitored and indicates that 111 kJ of heat is released from the system during the reaction. 2. **Piston Movement:** The position of the piston is monitored to determine the work done by the gas on the system. It is deduced that the piston performs 348 kJ of work. **Questions for Review:** 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 **Conclusion:** This experiment illustrates the relationship between thermal changes and mechanical work within a controlled system undergoing a chemical reaction. Monitoring both heat flow and piston movement provides insights into whether the reaction is exothermic or endothermic and how the energy dynamics within the system operate. **Interactive Component:** Please use the options above to answer the review questions and understand the principles demonstrated in this experiment. After selecting your answers, click 'Check' to validate your understanding. Save your progress by using the 'Save For Later' option available at the bottom right. --- This concludes the module on gaseous reactions in a thermally insulated system. For further reading,
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