What is the pH of a vegetable oil with an acid value of 10? How to calculate the amount of alkali to add?
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The acid value is the number of milligrams of KOH required to neutralize the free fatty acids in 1 gram of oil. I would appreciate it if the expert A could give some guidance: What is the pH value of 10 vegetable oils with different acid values? To dilute 100 grams of this oil to 1000 milliliters with a pH of 12, how many grams of base (pure KOH) are required?
It depends on what system it is In a water-based system, oleic acid reacts with alkalis to form soaps; such systems have a good affinity for water, and therefore the pH value is likely to be similar to that of a water-based system. The change in pH after adding alkalis can be calculated using approximate methods. If it is a system formed using a non-aqueous solvent, this problem becomes much more difficult. It is recommended that the original poster check some relevant information before conducting the experiment.
qugd top expert! Handshake example: Using methanol containing 10% water, NaOH is added at a concentration of about 0.01 mol/L to bring the pH to around 12. If the aforementioned fatty acid oil is then added, will the pH decrease?