51.8kJ/mol
The reaction is dehydration.
cuso4 - 5h2o= cuso4 + 5h20 + heat
penta = 5 copper(II) sulphate pentahydrate = CuSO4*5 H2O CuSO4*5 H2O + heat --> CuSO4 + 5 H2O
The supersaturated solution begin to drop small crystals when the additional sodium thiosulfate was added because the supersaturated solution got reverted back to a saturated solution. Every solution has it;s own level of saturation, at a certain temperature a limit of the solute can be disolved in it, if you heat the solution the limit changes and more of the solute can be added in the solution. This is a supersaturated solution.When you drop an extra crystal into a supersaturated solution, all the extra crystals that aren't suppose to be in it crystalize out of the solution.
heat of fusion
Sodium thiosulphate is used commercially in many products, including bleah, disinfectants, table salts, cleaning products and heat production in heat packs and hand walmers.
The main use of boron compounds is in the form of sodium tetraborate pentahydrate (Na2B4O7) for making insulating fiberglass and sodium perborate bleach. Wikipedia says its an excellent insulator so am afraid it cant conduct heat :)
The reaction is dehydration.
The heat of fusion is:Q = specific heat x mass
Nuclear fusion releases energy as heat.
There is no relationship between heat of fusion and heat of vapourisation
CuSO4•5H2O + heat ---> CuSO4 + 5H2O
Because of the heat of fusion the ice is now water
Heat of fusion is a physical property.
molar heat of fusion
heat fusion is to join things together by heat. ie plastic welding.
cuso4 - 5h2o= cuso4 + 5h20 + heat