∆H (enthalpy change) should be positive because you would need energy to break the oxygen- oxygen bond to generate 2 molecules of Oxygen .
It is type of energy or the measurement of energy . The quantity of enthalpy equals to the total content of heat of a system .
It can be defined as the sum of total internal energy and the product of volume and pressure .
It describes the system is endothermic or exothermic .
It is a reaction in which energy is released from the system in the form of heat and light.
in this loss of energy occurs. energy liberated from system to surrounding. the enthalpy change i.e. ∆H<0.
It is a reaction in which energy is absorbed from the surrounding to the system. in this gain of energy occurs. the enthalpy change i.e ∆H>0.
Learn more about enthalpy change here:
brainly.com/question/14047927
#SPJ4
