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Explain why:(a) It is necessary to find out the ration of reactants required in the preparation of sodium sulphate.(b) fused calcium chloride is used in the preparation of FeCI3? |
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Answer» (a) Since sodium hydroxide and sulphuric acid are both soluble, an excess of either of them cannot be removed by filtration. Therefore it is necessary to find out on small scale, the ratio of solutions of the two reactants. (b) As iron chloride is highly deliquescent, so it is kept dry with the help of fused calcium chloride. |
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