Not sure how to answer this: A. Identify the side that is acidic
B. Explain why it's acidic
C. Identify the side that is basic
D. Explain why this side is basic

A. The red side is acidic.

B. Because it has more positive hydrogen ions.

C. The blue side is basic.

D. Because it has more negative hydroxide ion.

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.

i think it's c. i'm not sure but i think so.