What did you identify as the system and the surroundings in...

What did you identify as the system and the surroundings in Part A, when the heated metal cylinder was added to the water in the calorimeter? How does the sign (positive or negative) of your calculated q and ∆H values correspond to the heat transfer between the system and surroundings, as you have defined them?

Say you have the below set up of an experiment -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 submerget in a large insulated water bath. (See sketch below) -The temperature of the water bath is monitored, and it is determined from this data that 182 kJ of heat flows into the system during the reaction. -From previous experiments, this chemical reaction is known to absorb 104 kJ of energy. A. The experiment mentions a system, what is the system? What are the surroundings? B. So if the water bath is monitored what will happen to the temperature of the water bath? Why? C. What else in this experiment could be changed to affect the overall energy output or input of the system?

Daniel G.

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