Balances on Reactive Processes
In this chapter, enthalpy change to be determined is associated with chemical processes and chemical equation. Therefore, I have to know on balancing chemical equation in order to learn this chapter.hehe..
Heats of reaction consist of endothermic and exothermic. Endothermic means that the system absorbs heat while exothermic means the system release heat to the surrounding. Since this chapter involving the chemical equation, so the enthalpy change will be doubled if the coefficient of chemical equation is doubled. There are three ways to calculate the heats of reaction.
Ways to calculate the heats of reaction.
#Hess’s Law
#Heat of Formation
#Heat of Combustion
There are two ways to calculate the energy,Q.
#using heat of reaction
-reference states are choosing from the molecules in the chemical equation
Formula: Q = (Extent of reaction) Hr. +(n∑ H out – n ∑ H in)
#using heat of formation
-reference states are the elements of chemical substances involved in the reaction
Formula: (n ∑ H out –n ∑ H in)