Mole Ratio of Reactants AP Kit
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\r\nTo select the volume ratio that produces the most product or consumes the most reactants, we must use an empirical method that is proportional to the amount of reaction that occurs, such as the volume of gas produced, intensity of color of product produced, or the weight of a precipitate formed. In this experiment, the method of continuous variation is used to combine two solutions in various volume ratios. An exothermic reaction has been selected for this experiment because the optimum ratio produces the greatest temperature change. The total `numbers of moles of reactants' are kept constant while varying the reactants. \r\n
\r\n Measurements are made on each different ratio until the optimum ratio is reached. This is the ratio at which the greatest amount of reactant is consumed, the greatest amount of product is made, and the greatest amount of heat is generated. (The optimum ratio is the stoichiometric ratio in the equation.) \r\n
\r\n The small amount of chemicals makes for faster prep time, easier clean up, and fewer disposal worries. All experiments have been prepared and bench tested under the guidance of AP chemistry teachers. Lab includes chemicals, an instructional guide, the appropriate MSDS, and enough materials for fifteen set-ups.\r\n Chemicals included:\r\n
\r\n 5 1 L Sodium Thiosulfate, 0.5M Soln\r\n
\r\n 5 1 L Sodium Hypochlorite, 0.5M Soln \r\n
\r\nAll twenty-two AP Chemistry Kits are available individually, or as a complete set. See No.800000 for more information.\r\n