Jen and mike investigate the reaction between magnesium lumps and hydrocholoric acid, HCL. Magnesium chloride solution, MgCL2, and hydrogen gas H2,are made. write a balanced symbol equation for...

Jen and mike investigate the reaction between magnesium lumps and hydrocholoric acid, HCL. Magnesium chloride solution, MgCL2, and hydrogen gas H2,are made. write a balanced symbol equation for this reaction.

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gsenviro | College Teacher | (Level 1) Educator Emeritus

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Chemical reaction between magnesium lumps and hydrochloric acid to yield magnesium chloride and hydrogen gas can be written as:

`Mg + 2HCl -> MgCl_2 + H_2`

This is a balanced chemical equation for the given scenario. From stoichiometry, we can calculate the quantity of products formed, given the amount of reactants. Here, 1 mole of magnesium reacts with 2 moles of hydrochloric acid and results in the formation of 1 mole of magnesium chloride and 1 mole of hydrogen gas. This information, along with the balanced chemical reaction, can be used for design of experiments. For example, if you are given a certain quantity of magnesium, you can calculate the quantity of hydrochloric acid it will react with (i.e. the amount that will be required for completion of reaction). And one can also calculate how much hydrogen gas will be formed.

Hope this helps.

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