CameraIcon

SearchIcon

MyQuestionIcon

20

You visited us 20 times! Enjoying our articles? Unlock Full Access!

Conductivity MP BP and Electronegativity (Group 2)

Calcium float...

Question

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

Open in App

Solution

Hydrogen gas is obtained during the reaction of calcium with water.
$C a + 2 H_{2} O \to C a (O H)_{2} + H_{2} ↑$
This hydrogen gas is adsorbed on the surface of calcium. Hence, calcium floats over water during its reaction with water.

Suggest Corrections

thumbs-up

4

Similar questions

Q. Why calcium floats over water during the reaction with water

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)?

Q. Assertion :Plastic grocery bags do not block drains during rains. Reason: Plastics are lighter than water and hence float over water.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Group 2 Physical Properties

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Conductivity MP BP and Electronegativity (Group 2)

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon