Core
Energetics: Enthalpy
Slide 26 of 34
2. Closed system
A closed system is capable
of exchanging only energy with its surrounding.
–The
containers are closed and therefore no matter can enter or leave them.
–However
they are not insulated and therefore they are able to exchange energy.
–If
the reaction produces energy (exothermic), then the system would lose energy to
the surrounding (which is the case here).
–If
the reaction absorbs or requires energy (endothermic), then the system would take
energy from the surrounding.
(C) Aqueous ZnSO4 and hydrogen gas