A mixture of gaseous reactants Is put Into a cylinder, where a chemical reaction

Question

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. From previous experiments, this chemical reaction is known to release 304. kJ of energy. The position of the piston is monitored, and it is determined from this data that the system does 281. kJ of work on the piston during the reaction.

Explanation / Answer

1) Since heat energy is released, the reaction is exothermic.

2) Since heat energy is released, temp of the water increase.

3) Since heat energy is released, the piston move out.

4) Heat energy is released means, the heat flow out of gaseous mixture.

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