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 202, kJ of energy. The position of the piston is monitored, and it is determined from this data that the system does 287. 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 heat flow into or out of the gas mixture? How much heat flows? Be sure your answer has the correct number of significant digits. exothermic O endothermic Ⓒup Odown O neither Ⓒin O out Oneither OF Ⓒout Oneither a Ou 1 atm pressure gases piton cylinder water bath 0

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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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.)
From previous experiments, this chemical reaction is known to release 202, kJ of energy.
The position of the piston is monitored, and it is determined from this data that the system does 287. 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 heat flow into or out of the gas mixture?
How much heat flows? Be sure your answer has
the correct number of significant digits
jexothermic
O endothermic
Ⓒup
Odown
Oneither
in
O out
Oneither
Ok
Ⓒout
O neither
2
Ou
0.9
X
1 atm pressure
gases
piston
Cylinder
water bath
0
G
Transcribed Image Text: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 202, kJ of energy. The position of the piston is monitored, and it is determined from this data that the system does 287. 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 heat flow into or out of the gas mixture? How much heat flows? Be sure your answer has the correct number of significant digits jexothermic O endothermic Ⓒup Odown Oneither in O out Oneither Ok Ⓒout O neither 2 Ou 0.9 X 1 atm pressure gases piston Cylinder water bath 0 G
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