CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Extraction of Highly Reactive Metals

Why calcium f...

Question

Why calcium floats over water during the reaction with water

Open in App

Solution

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 calcium metal and hence calcium floats on water.

Suggest Corrections

thumbs-up

169

Similar questions

Q. Calcium floats over water during its reaction with water. Give reason.

Q. Assertion :Calcium floats over water during the reaction with water. Reason: Calcium reacts with water less vigorously so that the heat evolved is not sufficient for the hydrogen formed, to catch fire. The bubbles of hydrogen gas formed stick to the surface of the water calcium

Q. Calcium on reacting with water begins to float.

Q. Which of the following metals on reaction with cold water liberates hydrogen gas but does not float on water (unlike Calcium) due to its vigorous reaction (with water)?

Why does petroleum oil float over water? [2 MARKS]

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Extraction of Aluminium

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Extraction of Highly Reactive Metals

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon