The discussion revolves around the chemical reactions of magnesium when placed in concentrated and dilute saltwater, focusing on the products formed in each scenario. Participants explore the differences in reaction kinetics and the potential gases produced during the reactions.
Participants generally agree that hydrogen gas will be produced during the reaction, but there is disagreement regarding the production of chlorine gas, with no consensus on whether Cl2 is formed in concentrated saltwater.
Participants reference the reactivity series, indicating that the discussion may depend on specific definitions and assumptions about the reactivity of magnesium and the conditions of the saltwater.
Borek said:It will be the same reaction in both cases (actually not different from the reaction with just water). The only difference will be kinetics - higher concentration of salt facilitates charge transfers, so it will most likely speed up the reaction.
sv3ora said:And what will be the products of the reaction? (gasses/solution)
I think H2 bubbles will emerge from magnesium, is that right?
Borek said:You are on the right track. They will definitely appear, although not "from magnesium" - they will be produced on the magnesium surface as product of the reaction.
Have you heard about reactivity series?
Borek said:To get Cl2 you would need a strong oxidizing agent. The only thing you have is magnesium - is it oxidizer, or reducer?.