A chemical reaction took place in a 5 liter cylindrical enclosure fitted with a

Question

A chemical reaction took place in a 5 liter cylindrical enclosure fitted with a piston (like the cylinder in an internal combustion engine). Over the time required for the reaction to be completed, the volume of the system changed from 1.40 liters to 3.70 liters. Which of the following statements below is true?

Work was performed by the system. A chemical reaction took place in a 5 liter cylindrical enclosure fitted with a piston (like the cylinder in an internal combustion engine). Over the time required for the reaction to be completed, the volume of the system changed from 1.40 liters to 3.70 liters. Which of the following statements below is true? Work was performed by the system. Work was performed on the system. The enthalpy of the system remained unchanged. The enthalpy of the system decreased. The enthalpy of the system increased.

Explanation / Answer

After completing the reaction, that means after completion of the work the volume of the system is changed, Hence work was performed on the system

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