Disadvantages of hard water
Answer Text: Disadvantages of hard water(i). Soap forms insoluble salts with magnesium and calcium ions; scum (calcium or magnesium stearate) thereby wasting soap.- For these reason soapless detergents are preferred to ordinary soaps because they do not form scum; but rather form soluble salts with #Mg^(2+)#and #Ca^(2+)#Examples of soapless detergents: omo, perfix, persil, fab e.t.c.(ii). Deposition of insoluble magnesium and calcium carbonates and sulphates formed from hard water result into blockage of water pipes due to the formation of boiler scales(iii). Formation of kettle fur which makes electrical appliances inefficient hence increasing running costs.(iv). Formation of scum on clothing reduces their durability and aesthetic appearance
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