I’d like to ask everyone! How is the formula for chemical synthesis calculated?
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I am conducting an experiment in which phosphoric acid, urea, potassium chloride, and water are used in a reaction to produce ammonium bicarbonate through synthesis and cooling crystallization. The designed composition is 20% nitrogen, 10% phosphorus, and 15% potassium, but the results of the final tests do not match this design at all. Teachers, what could be the reason for this? What should I do? Please reply to my email: gxly2277@163.com Thank you!
Let’s consider some simple questions first. 1. Is your design or calculation correct? 2. Have you checked to ensure that the element contents in your raw materials are accurate? 3. Have various possible losses during the experiment been taken into account?
The content of the single ingredient is correct, and the amount of material added is calculated based on the desired concentration. The problem is that the three nutrients in the crystals are unstable; for example, if the nitrogen content in the crystals is low compared to what was designed, then the nitrogen content in the mother liquor will be high. How can I control the reactants to crystallize as designed?
What is your target product? Double displacement to produce potassium dihydrogen phosphate? You say, “But the final test results are exactly in line with the design,” which is great. Have you considered crystal kinetics? What is your control step?
Hello! Thank you very much for your reply. Could you please leave your QQ, email address, or phone number? I would like to explain things to you in detail!