What happens when combinations of k+cu2so4 reacts
(balanced)

I can't help you with this specific question and give you the answer but I can email you a link that will definitely help you solve that problem :)

Olá. porque a reação na temperatura é muito rapida a do copo : )

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.