Equilibrium expression conclusions about

Among the complications that can interfere with this conclusion is the possibility that the polymer becomes insoluble beyond a critical molecular weight or that the low molecular weight by-product molecules accumulate as the viscosity of the mixture increases and thereby shift some equilibrium to favor reactants. Note that we do not express reservations about the effect of increasing viscosity on the mobility of the polymer molecules themselves. Apparently it is not the migration of the center of mass of the molecule as a whole that determines the reactivity but, rather, the mobility of the chain ends which carry the reactive groups. 

We Can Summarize These Conclusions About the Equilibrium Expression as Follows ... 

What conclusions would you draw about the order of the forward reaction Estimate k and write down a reaction rate expression which is consistent with equilibrium. 

In recent years, these findings have led to attempts to express the polarity of the solvent empirically. From the effect of solvents on some appropriate standard processes sensitive to solvents (e.g. rate or equilibrium of a standard chemical reaction, light absorption by a solvatochromic standard dye) conclusions are drawn about the polarity of the solvent. The chosen standard processes act as reporters characterizing the effect of solvent on the microscopic level. 

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