![]() ![]() However, this must be balanced with the high cost of the energy needed to maintain these conditions.Ĭatalysts increase the rate of reaction without affecting the yield. High temperature and pressure produce the highest rate of reaction. The reaction conditions used are chosen to get an acceptable yield of product in an acceptable time.įor example, there would be little profit in getting a very high yield if it took several weeks or months to achieve. In addition, the desired products must be separated out from a mixture that also contains some of the original reactants. To make a given mass of product, a process with a low percentage yield requires more of the reactants than a process with high percentage yield. The percentage yield is decreased if the reactants do not completely form the products.
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