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Answer the questions given below, relating your answers only to salts given in the following list: Sodium chloride, calcium chloride, copper sulphate.5-water.(i) What name is given to the water in compound copper sulphate. 5-water ?(ii) If copper sulphate. 5-water is heated, the water is driven off leaving anhydrous copper sulphate.(a) What is the colour of anhydrous copper sulphate ?(b) By what means, other than heating, could you dehydrate copper sulphate. 5-water and obtain anhydrous copper sulphate ?(iii) What is deliquescence.(iv) Which one of the salts in the given list is deliquescent ? |
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Answer» (i) Water of crystallization. (ii) (a) White. (b) By adding cone. H2SO4 . (iii) Compounds that take up enough water from the air to dissolve in the water, are called deliquescent, e.g. Calcium chloride (CaCl2) and sodium hydroxide are deliquescent. (iv) Calcium chloride. |
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