consider the reaction C6H14 + 9.5O2 yields 6CO2 + 7H2O at constant pressure. which response is true?

Question

1. work may be done on or by the system as the reaction occurs, depending upon the temperature.

2. work is done on the system as the reaction occurs.

3. no work is done as the reaction occurs.

4. work is done by the system as the reaction occurs.

Answer 1

work = -p*delta V. I don't see a volume change.

Answer 2

Work is done on the system as the reaction occurs. :)