A chemical reaction that has a general formula nA -> (A)n is best described

Polymerization has a general formula nA ⇒ (A)n

Given

General formula : nA ⇒ (A)n

Required

Type of chemical reaction

Solution

There are several types of reactions that can occur.

replacement (single or double), synthesis, decomposition, burning etc.

Polymerization is a combination of monomers which are the smallest units of the polymer

The polymers themselves can be differentiated based on

natural polymers and synthetic polymers

homopolymers (one type of monomer) and copolymers (two or more types of monomers)

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

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.