What are vapourization and boiling point ? Explain the process of boiling of water.
What are vapourization and boiling point ? Explain the process of boiling of water.
On heating, when the ice gets converted into water and as we continue further heating, we shall see that temperature begins to rise. The temperature keeps on rising till it reaches nearly $100^{\circ} \mathrm{C}$ when it again becomes steady.
The heat supplied is now being utilised to change water from liquid state to vapour or gaseous state
The change of state from liquid to vapour (or gas) is called vaporisation.
It is observed that the temperature remains constant until the entire amount of the liquid is converted into vapour.
Both the liquid and vapour states of the substance coexist in thermal equilibrium, during the change of state from liquid to vapour.
The temperature at which the liquid and the vapour states of the substance coexist is called its boiling point.
The process of boiling of water:
Take a round-bottom flask, more than half filled with water.
Keep it over a burner and fix a thermometer and steam outlet through the cork of the flask. As water gets heated in the flask, note first that the air, which was dissolved in the water, will come out as small bubbles.
Similar Questions
A closed bottle containing water at $30°C$ is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened
A closed bottle containing water at $30°C$ is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened
Explain the process of melting of ice with explanation of freezing, melting and melting point.
Explain the process of melting of ice with explanation of freezing, melting and melting point.
The graph shows the variation of temperature $(T)$ of one kilogram of a material with the heat $(H)$ supplied to it. At $O,$ the substance is in the solid state. From the graph, we can conclude that
The graph shows the variation of temperature $(T)$ of one kilogram of a material with the heat $(H)$ supplied to it. At $O,$ the substance is in the solid state. From the graph, we can conclude that
when a man eats $100\,g$ of ice in a minutes, how much power will he get ? The latent heat of ice is $80\,cal/g$.
when a man eats $100\,g$ of ice in a minutes, how much power will he get ? The latent heat of ice is $80\,cal/g$.
What is sublimation ? Give name of sublimation substances.
What is sublimation ? Give name of sublimation substances.