Some divers use a rebreather device, which converts exhaled carbon dioxide into oxygen through the reaction
4KO2(s) + 2CO2(g) → 2K2CO3(s) + 3O2(g) + 378.8kJ
Which of the following is true?
Question 1Select one:
a.
the reaction is endothermic, and its ΔH is positive
b.
the reaction is exothermic, and its ΔH is negative
c.
the reaction is endothermic, and its ΔH is negative
d.
the reaction is exothermic, and its ΔH is positive