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 absorb 327 kJ of energy.

Answer 1

In this scenario, a mixture of gaseous reactants is undergoing a chemical reaction in a cylinder with a moving piston. The pressure in the cylinder is kept constant at 1 atm, and the cylinder is submerged in an insulated water bath. The chemical reaction absorbs 327 kJ of energy.

Step-by-step explanation:

In this scenario, a mixture of gaseous reactants is undergoing a chemical reaction in a cylinder with a moving piston. The pressure in the cylinder is kept constant at 1 atm, and the cylinder is submerged in an insulated water bath. The chemical reaction absorbs 327 kJ of energy. This setup is an example of a constant pressure process in thermodynamics, where the pressure remains constant while the volume changes.

In this case, the energy absorbed by the chemical reaction causes a change in the volume of the gas, which is facilitated by the moving piston. The constant pressure ensures that the pressure exerted by the gas on the surroundings remains constant throughout the reaction. The insulated water bath prevents any heat transfer between the cylinder and the external environment, allowing the researcher to measure the amount of energy absorbed by the reaction accurately.