The method of continuous variation was used to determine the stoichiometry for:
x A (aq) + y B (aq)  z P (aq)
In this experiment, the molarity concentrations of reactants A and B are both 1.50 x 10-3 M. The amount of product was measured for a variety of mixtures of A and B, where the total mixture volume was always kept constant at 10.0 mL. The following plot was generated:
a) Using the equations of the trendlines, perform a simultaneous equations calculation to determine the volume of A used to obtain the maximum amount of product (= the value of x at the point of intersection of the lines).
b) Determine the volume of B used to obtain the maximum amount of product (hint – what was the total volume of the mixture of A and B?).
c) Using these two volumes, determine the simplest whole number volume ratio of reactants (volume A : volume B) used to obtain the maximum amount of product. Note that this ratio yields the reaction stoichiometry, i.e., volume A : volume B = x : y.