Calculation of ethanol content in pure methanol
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Tank A contains 2,356 tons of pure methanol, with an ethanol content of 83 ppm. Tank B contains 335 tons of pure methanol, with an ethanol content of 110 ppm. If all 335 tons in Tank B are pumped into Tank A, and then full reflux is established in Tank A, what will be the ethanol content in Tank A after mixing? How can this be calculated? Please provide guidance
Can’t you even do such a simple arithmetic mean? (236*83+335*110) / (236+335)
PPM is a mass concentration, not a mass fraction, right?
ppm stands for one part per million; it is a ratio of the number of molecules, and it is never a mass concentration. PPM cannot be directly converted to units such as mg/L, g/m3, or mg/kg; conversion is possible only based on the molecular weight of the medium. For gases, the unit ppmv is used, and in fact, the ratio of the number of gas molecules is the same as the volume ratio