chem about h20

要睇係唔係exothermic reaction,
如果係exothermic reaction, water is in gas state,
如果係endothermic reaction, water is liquid state.



2010-04-09 15:42:04 補充：
neutralizationn generally is exothermic reaction,
since the energy produced may be too little to vapourise the water.
Therefore, in some cases, the water is in liquid state

It depends on the amount of heat liberated in the reaction.

If energy released is enough for the water to change its state to gas, then (l) will become (g).

咁中和反應姐係出gas ge水?