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The overall reaction is: $$\ce{H2SO4 + Na2Cr2O7 → 2 CrO3 + Na2SO4 + H2O}$$ How to separate chromium trioxide and sodium sulfate from solution? Since chromium trioxide is soluble, it exist as chromic acid in the solution. So, in the reaction pot, there are compounds like $\ce{H2CrO4, H2Cr2O7}$ along with our target compound $\ce{CrO3}$, all in equilibrium. ...


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The industrial processes uses acetone for shea fractionation. The crude oil is degummed first by a water degumming process and then fractionation is carried out using acetone as a solvent for separating oleic fractions. Palm oil melts at approx. 36 °C. And you provided the temperature for crystallization as 33.5 °C. Decrease the temperature. Shea butter ...


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When a 1° amine attacks to a carboxyl group, The structure below (left) is generated which lowers the energy level of the intermediate such that the second amine can easily react with the other carboxyl group. It is clear that 2° amines (right) don't have such proton for hydrogen bonding with the oxygen. Why the second 2° amine doesn't attack to the other ...


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I would try to use a 5-10 cm layer of fine SiO2 particles above a slow filter in a Buchner funnel. I'd be surprised if it didn't do the trick. Consider that the cellulose particles you see after filtration could come from the paper filter as well (I sometimes see such tiny tiny particles floating around after filtration), in which case it may help to ...


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