2007年8月21日 星期二

CE Chemistry:Function of the sodium hydroxide in the saponification

The main function is to neutralize the acid formed to give soap(salts of alkanoic acids).

It is not to lower the solubility of the salt which in fact is the function of sodium chloride.

It is also not a catalyst which only speeds up reactions but does not take part in the reaction.

The hydrophilic head is COO-, not Na+.

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