Question

1. The rate law for a certain reaction is second order with respect to one of the reactants, R. Suppose you study this reaction, observing the absorbance of light at the analytical wavelength for R, and record the data with respect to elapsed time. Also suppose that the concentrations of all the other reactants are in large excess, and that A is the only colored species involved. Explain which absorbance function, A, ln A, or 1/A, would yield a straight-line graph when plotted against elapsed time.2. Suppose that in the reaction Q + R ? P, only the product, P, is colored.(a) What happens to the absorbance at the analytical wavelength for P of the mixture as the reaction progresses?(b) Suppose you do an experiment involving this reaction in which Q is present in large excess of R. If this reaction is first order with respect to R, would the graph of ln A (for P) versus time be a straight line? Briefly explain.Please help!