Explain why calcium metal after reacting with water starts floating on its surface . Give chemical equation for the reaction
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the reaction of calcium with water is exothermic and it liberates hydrogen gas this hydrogen gas accumulates on d metal and hence calcium starts floating in the water. The resultant of the process is calcium hydroxide
Ca(s) + H2O(l) ➡️ Ca(OH)2
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ca+H2o=ca (OH)2+HE(g)
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