Select the correct answer. How does adding oxygen (O2) to this reaction change the equilibrium?
2502(g) + O2(g) = 2503(8)

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.