[Questão Comentada] - ENEM - Tema: PILHAS EM SÉRIE

(Enem 2017) The invention of the blue LED, which allows the generation of other colors to make up white light, enabled the construction of more energy-efficient and longer-lasting lamps than incandescent and fluorescent lamps. In a laboratory experiment, two batteries are connected in series to light a blue LED that requires 3.6 volts to operate. Consider the reduction half-reactions and their respective potentials shown in the table. Which series combination of batteries provides a potential difference, under standard conditions, sufficient to light the blue LED? #Enem #ChemistryInEnem