an important industrial route to extremely pure acetic acid is the reaction of m

Question

an important industrial route to extremely pure acetic acid is the reaction of methanol and carbon monoxide. use bond energies to calculate the heat of reaction

Explanation / Answer

Write down their formulas: CH3OH + CO ----> CH3C(=O)(OH) Heat of rxn = (sum of bonds broken) - (sum of bonds formed) You can see that the CH3 unit stays intact and so you don't need to consider it for this calculation. The same goes for the OH unit because it starts connected to a carbon and ends up connected to another carbon. However the three bonds that matter are those of CO, C=O (carbonyl) and C-C (acetic acid). Thus, the energy of reaction is: Heat of rxn = (triple bond CO) - (double bond CO + C-C bond) I hope this helped you out.plz give a five star rating :)

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