why is it so that if put the empty plate on candle it will burn quickly but if we put water on plate and we will put on candle it will burn after absorbing water. why is it so?

Open in App

Solution

When you put water on plate and heat, the heat is transferred to water and temperature of water is increased. Gradually water reaches 100^oC, then further heat is absorbed as latent heat and phase change occur (become water vapour). Until total water is evaporated, paper plate is unable to catch water.
After water is evaporated, further heat is absorbed in order to reach ignition temperature of paper. As soon as paper plate reaches it ignition temperature, it catches fire.

Suggest Corrections

Similar questions

When we put Cuso4 in water after some time we find the solution turns blue . why? Also on heating it what change will occur?

Why does water became cold if we put ice cubes into it?

Join BYJU'S Learning Program