This graph shows how the concentration of the product of a reaction changed during a chemical reaction. Which sentence best desc
ribes how the concentration of the product changed? 1.0 0.8 0.6 Concentration of junpoid 0.4 0.2 0 20 80 100 40 60 Time A. It increased immediately as the reaction progressed. B. It decreased gradually as the reaction progressed. C. It decreased immediately as the reaction progressed. D. It increased gradually as the reaction progressed.
2 answers:
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Answer:
The standard enthalpy of formation of methanol is, -238.7 kJ/mole
Explanation:
The formation reaction of CH_3OH will be,
The intermediate balanced chemical reaction will be,
..[1]
..[2]
..[3]
Now we will reverse the reaction 3, multiply reaction 2 by 2 then adding all the equations, Using Hess's law:
We get :
..[1]
..[2]
[3]
The expression for enthalpy of formation of will be,
The standard enthalpy of formation of methanol is, -238.7 kJ/mole