understanding the definitions of heat and work mitgseous reactants is put into a

Question

understanding the definitions of heat and work mitgseous 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 cylinder is also submerged in a large insulated water bath.(See sketch at right.) 1 atm pressure on the mixture of 1 atm. The pston of energY The position of the piston is monitored, and it is determined from this data that the system does 197. kJ of work on the piston during the reaction. gases Is the reaction exothermic or endothermic? up down neither in out neither 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? out neither

Explanation / Answer

Heat is absorbed so endothermic

Heat is absorbed so temp increases

As a positive work is done by the system so piston moves down

As the energy of gas mix is low as compared to water the heat will flow into the gas chamber

So heat flow will be 364-197 kJ = 167 kJ

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