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Q3. A solution of a substance 'X' is used in white washing.(i) Name the substance 'X' and write its formula.(ii) Write the reaction of the substance X'named in (i) above with water.OR |
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Answer» Answer: SUBSTANCE X is CALCIUM OXIDE whose solution we use in water which is used for white washing. The formula of substance X is Cao. (ii) Calcium oxide reacts vigorously with water to produce SLAKED lime (calcium hydroxide) releasing a large amount of heat. Ca0(s) + H2O(l) → Ca(OH)2(AQ) (Quick Lime) (Water) (Slaked Lime) Explanation: X substance is CaO (2) CaO +H2O -CaO(OH)2 |
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