ENEM 2019 - Questão 08 - Eletroquímica

ENEM 2019 - Question 08 - Electrochemistry (Enem 2019) To unclog residential sewage pipes, a commercial solid mixture containing sodium hydroxide (𝑁𝑎𝑂𝐻) and another pulverized chemical species is used. When water is added to this mixture, a reaction occurs that releases hydrogen gas and energy in the form of heat, increasing the efficiency of the unclogging process. Consider the standard reduction potentials (𝐸°) of water and other species in a basic medium, expressed in the table.