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CBSE - X - Chemistry


Asked by shubhamchauhan 9th September 2015, 6:30 PM
Answered by Expert


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 Expert 9th September 2015, 6:35 PM

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