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What are detergents chemically?list two merits and two demerits of using detergents for cleaning. state the reason for the having calcium and magnesium



Detergents are sodium salts of petroleum products.they work well in hard water.does not cause any side effects.the major disadvantage is that detergents are nonbiodegradable
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Detergents are ammonium or sulphonate salts of long chain carboxylic acids. Detergents is effective in both hard and soft water.They have more cleansing action than soaps Demerits of detergents are 1)they are non biodegradable.thus they cause pollution 2)Detergents in water bodies will produce algae and will reduce oxygen content in water Calcium and magnesium ions are present in hard water But unlike soaps detergents will not produce insoluble precipitates when in water.so they are effective than soaps
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