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What is hydroxial ppt?.................................................
It is defined as the number of milligrams of potassium hydroxide required to neutralize the acetic acid taken up on acetylation of one gram of a chemical substance that contains free hydroxyl groups. Hydroxyl value is a measure of the content of free hydroxyl groups in a chemical substance, usually expressed in units of the mass of potassium hydroxide (KOH) in milligrams equivalent to the hydroxyl content of one gram of the chemical substance.
Hydroxide Precipitation of Metals. The most common used method to remove soluble metal ions from solution is to precipitate the ion as a metal hydroxide. ... At a pH of 8.0 nickel has a solubility of 70 mg/l and at a pH of 10.2 the solubility is 0.1 mg/l.its a common method use to precipitate the heavy metals in easy method . HOPE IT CLEARS NOW ..
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