When magnesium metal is added to a beaker of HCl (aq), a gas is produced. a) Kno

Question

When magnesium metal is added to a beaker of HCl (aq), a gas is produced. a) Knowing that magnesium is oxidized and that hydrogen is reduced, write the balanced equation for the reaction. b) How many electrons are transferred in the balanced equation? c) What quantity of useful work can be obtained when Mg is added directly to the beaker of HCl? d)How can you harness this reaction to do useful work?

Explanation / Answer

2Mg(s) + 2HCl(aq) ---> 2MgCl(aq) + H2(g) No, the mass decreased as hydrogen gas is produced and escapes into the air. A reaction between a metal and an acid gives the salt of the metal and hydrogen gas. Magnesium is a silver-white solid. Magnesium Chloride is a white solution.

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