Question

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If soap has high alkali content it irritates skin . How can the amount of excess alkali be determined ? What can be the source of excess alkali ? ​

Answer 1

Answer:

Hello mate...

If soap has high alkali content it irritates skin. ... Excess of alkali can be found out using acid-base titration. The alkali that is formed during the hydrolyses of oil during soap preparation may be a cause of excess alkali in the soap. Soap is prepared by the process called saponification