Why is ice at 273 K more effective in cooling than water at the same temperature?
ice is solid water which at 273k(freezing point) absorbes heat to get converted to liquid form at this constant temperature ,the heat absorbed is called the latent heat of fusion when completely converted to water in liquid form ,it starts to absorb heat till its temperature becomes equal to that of the surrounding or the body to which it has contact and equillibrium is attained water at 273k can only absorb heat till equillibrium in temperature without absorbing the equivalent heat of fusion like ice at 273k hence the change in enthalpy of water at 273k is less than that of ice at 273k Good Luck!!
