Holaa alguien me ayuda en esto... ) ¿Cuál de los siguientes compuestos orgánicos, de similar masa molecular, presenta un punto de ebullición más alto?
a) dietileter (CH3-CH2-O-CH2-CH3) b) n-butanol (CH3-CH2-CH2-CH2-OH)
c) pentano (CH3-CH2-CH2-CH2-CH3) d) 1-cloropropano (CH3-CH2-CH2-Cl)

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.