Final answer:
The claim that hydrochloric acid reacts with manganese oxide to produce manganese chloride, water, and chlorine gas is true. The reaction is a redox reaction where manganese dioxide (MnO2) is reduced and HCl is oxidized, producing chlorine gas as a byproduct.
Step-by-step explanation:
The statement that hydrochloric acid combines with manganese oxide to yield manganese chloride plus water and chlorine gas is false. Typically, hydrochloric acid (HCl) reacts with metal oxides to form the corresponding metal chloride and water. However, manganese oxide (MnO2) reacting with hydrochloric acid yields manganese chloride (MnCl2), water (H2O), and chlorine gas (Cl2) in a redox reaction, not just a simple acid-base reaction. Examples of acid reactions with metal oxides include the reaction of hydrochloric acid with sodium hydroxide (NaOH), producing sodium chloride (NaCl) and water (H2O), and the reaction with lithium hydroxide (LiOH), producing lithium chloride (LiCl) and water. In contrast, reactions with metals such as zinc or iron with HCl typically produce the corresponding metal chloride and hydrogen gas (H2). Manganese oxide's reaction is unique because it includes the release of chlorine gas due to the higher oxidation state of manganese in MnO2.