Q44 of 101 Page 233

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?

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.


More from this chapter

All 101 →
42

Both antacids and antiallergic drugs are antihistamines but they cannot replace each other. Explain why?

 43

What is a soft soap?

 45

Explain why some times foaming is seen in river water near the place where sewage water is poured after treatment?

 46

Which category of the synthetic detergents is used in toothpaste?