Question

state what are the synthetic detergent ? explain experimentally how u will determine? ​

Answer 1

Solution. Divide the sample of hard water into two parts. To the first part of hard water add synthetic detergent and rub slowly with hand, it will lather easily. Now add to the second part of hard water an ordinary piece of soap and rub with hand, it will not lather but scum is formed and soap is wasted