CBSE Class 10 Answered
explain why calcium metal after reacting with water , starts floating on the surface . write the chemical equations for the reaction
Asked by jk42639944 | 30 Mar, 2021, 06:35: PM
Expert Answer
Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g)
The reaction of calcium with water is less violent. SO, the heat released is not sufficient for the hydrogen to catch fire. Calcium starts floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal and hence calcium floats on water.
Answered by Ramandeep | 30 Mar, 2021, 07:34: PM
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