What are the units for enthalpy of reaction?
In General Chemistry, the unstated premise is that you are doing reactions under constant pressure.
ENTHALPY IS HEAT FLOW AT CONSTANT PRESSURE
Without going into too much derivation:
#\mathbf(DeltaH = q_p)#
#q_p#is the heat flow #q#under constant pressure conditions.
Heat flow is thermal energy flow, so the units are in
ENTHALPY OF REACTION
It follows from above that enthalpy of reaction,
However, you would also see enthalpies of reaction tabulated for
The standard enthalpy of reaction,