When hydrochloric acid is poured on limestone, the mixture fizzes, releasing a colorless, odorless gas. The equation for this chemical reaction is located below. What is the identity of the gas?
CaCO3(s) + 2 HCl(aq) ---> CaCl2(aq) + CO2(g) + H2O(l)
Select one:
a. CaCl2
b. CaCO3
c. CO2
d. H2O
