For the methanol combustion reaction

Question

2CH3OH(â„“) + 3O2(g) ----> 2CO2(g) + 4H2O(g)
estimate the amount of P [change]V work done and tell whether the work was done on or by the system. Assume a temperature of 27â—¦C.

1. 2.5 kJ, work done by the system
2. 2.5 kJ, work done on the system
3. No work is done in this reaction.
4. 7.5 kJ, work done by the system
5. 7.5 kJ, work done on the system