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Question
Why does calcium flot on water ?
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Solution
The reaction of calcium with water is less violent. The heat evolved is not sufficient for the hydrogen to catch fire.
Ca(s)+2H2O(l)→Ca(OH)2(aq)+H2(g)
Calcium reacts less vigorously with water to form hydrogen gas. The metal starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal.
Ca(s)+2H2O(l)→Ca(OH)2(aq)+H2(g)
Calcium reacts less vigorously with water to form hydrogen gas. The metal starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal.
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