What happen when we heat Hg2Cl2 above its boiling point?
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The boiling point is when the liquid and vapor are in EQUILIBRIUM at the external atmospheric pressure. If heat is applied too quickly and/or access to the atmosphere is restricted the pressure can rise and the boiling point rise with it[the principle of the pressure cooker]. If the obstruction is removed or the container breaks the pressure is suddenly reduced and the water is now superheated at the lower pressure and will spontaneously erupt into water vapor with possibly very dangerous results. Never heat a closed system that is not designed to sustain the pressure or doesn't have a functioning pressure relief valve.
It is also possible if a liquid is very still and in a very clean container to super heat it above the boiling point. In such a case evaporation is from the surface and heat is from the bottom and the temperature of the bulk liquid can rise above the boiling point. Again when disturbed the liquid will erupt and almost explode. Very clean glass tea kettles are prone to this. This is why in lab distillation one adds boiling stones or similar devices to disrupt the quiet liquid.
It is also possible if a liquid is very still and in a very clean container to super heat it above the boiling point. In such a case evaporation is from the surface and heat is from the bottom and the temperature of the bulk liquid can rise above the boiling point. Again when disturbed the liquid will erupt and almost explode. Very clean glass tea kettles are prone to this. This is why in lab distillation one adds boiling stones or similar devices to disrupt the quiet liquid.
shashiprakashsingh92:
this is not technical answer, what will be the product when he heat Hg2Cl2 above its boiling point.
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