# Equilibrium

• answer is option 3. How to find it please tell the concept behind it.

• @raja if we increase pressure, equilibrium will be shifted in the direction of less volume, hence with rise of pressure more ice will melt into water.

• @tushar-rathore said in Equilibrium:

@raja if we increase pressure, equilibrium will be shifted in the direction of less volume, hence with rise of pressure more ice will melt into water.

How water has less volume as compared to ice

• @raja
It has something with microscopic structure of water. As you may know, a water molecule consists of one oxygen atom and two hydrogen atoms. When they freeze, water molecules arrange into a crystal structure. It happens that, unlike most crystals, this one happens to have an arrangement that takes up a little more room than the liquid. There are a few other liquids that expand when they freeze, but it isn't very common. Sorry that it's hard to give a more detailed answer.

• @raja just try to imagine when you apply pressure to a thing your general desire is to make it more and more compact. Like when you apply pressure to a gas at const temp you get it liquified as a result you make it more compact or on other words dense
You can observe that ice float on water it must be less dense