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.) 1 atm pressure The temperature of the water bath is monitored, and it is determined from this data that 238. kJ of heat flows into the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the piston does 243. kJ of work on the system during the reaction. gases exothermic Is the reaction exothermic or endothermic? х10 endothermic up ? Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither absorb Does the reaction absorb or release energy? release neither How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits. - 481. kJ

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.) 1 atm pressure The temperature of the water bath is monitored, and it is determined from this data that 238. kJ of heat flows into the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the piston does 243. kJ of work on the system during the reaction. gases exothermic Is the reaction exothermic or endothermic? х10 endothermic up ? Does the temperature of the water bath go up or down? down neither in Does the piston move in or out? out neither absorb Does the reaction absorb or release energy? release neither How much energy does the reaction absorb or release? Be sure your answer has the correct number of significant digits. - 481. kJ

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter12: Thermodynamic Processes And Thermochemistry

Section: Chapter Questions

Problem 81AP

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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 1atm . The cylinder is also submerged in a large insulated water bath. (See sketch at right.) From previous experiments, this chemical reaction is known to absorb 201.kJ of energy. The position of the piston is monitored, and it is determined from this data that the system does 121.kJ of work on the piston during the reaction.
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 1atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.)From previous experiments, this chemical reaction is known to absorb 386.kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 181.kJ of heat flows out of the system during the reaction.
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A mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to 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. From previous experiments, this chemical reaction is known to release 209. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 398. kJ of heat flows out of the system during the reaction. A) is the reaction exothermic or endothermic? B) Does the temperature of the water go up or down? C) does the piston move in, out, or neither? D)does The gas mixture do work, Or is work done on it? E)how much work is done on (or by) the gas mixture?
A mixture of gaseous reactants is put in to a cylinder, where a chemical reaction turns them in to 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. From previous experiments, this chemical reaction is known to release 209. kJ of energy. The temperature of the water bath is monitored, and it is determined from this data that 398. kJ of heat flows out of the system during the reaction. A)does The gas mixture do work, Or is work done on it? B.)how much work is done on (or by) the gas mixture?
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.) From previous experiments, this chemical reaction is known to release 204. kJ of energy. The position of the piston is monitored, and it is determined from this data that the system does 240. kJ of work on the piston during the reaction.
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 252. 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 337. kJ of work on the system during the reaction.
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