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Question
Name three chemicals responsible for the surface activity of various detergents.
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Solution
Chemicals responsible for the surface activity of various detergents are alkylbenzene sulphonate, alcohol ethoxy sulphates and alkyl sulphates.
RELATED QUESTIONS
In the neighbourhood of your school, hard water required for an experiment is not available. Select from the following group of salts available in your school, a group each member of which, if dissolved in distilled water, will make it hard:
(a) Sodium chloride, calcium chloride
(b) Potassium chloride, sodium chloride
(c) Sodium chloride, magnesium chloride
(d) Calcium chloride, magnesium chloride
People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?
Fill in the following blank with suitable word:
............. is better than soap for washing clothes when the water is hard.
What is a detergent? Name one detergent.
What is a soap? Name one soap.
The chemical which is not required for the preparation of soap in the laboratory is:
(a) vegetable oil
(b) baking soda
(c) caustic soda
(d) common salt
Give the reason of formation of scum when soaps are used with hard water.
Water, coconut oil, and _______ are necessary for soap preparation.
- Write the formula and draw electron dot structure of carbon tetrachloride.
- What is saponification? Write the reaction involved in this process.
