What is the balanced equation for the reaction that occurs when methanoll. CH3OH is burned in air O2 and produces carbon dioxide and water

2 CH3OH + 3 O2 => 2 CO2 + 4 H2O

Explanation: The combustion reaction is now balanced.

C has 2 atoms both sides.

H has 8 atoms on both sides

O has also 8 atoms both in the reactant and product side.

screening

explanation:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.