Question

What's the balanced equation for magnesium and hydrochloric acid?

Answer 1

Hint: A chemical reaction refers to a phenomenon which leads to the chemical transition of one type of chemical substance to another. Chemical reactions involve changes with reference to the electrons positioning in the formation as well as decomposition of chemical bonds that exist between the atoms, while no change occurs to the nuclei i.e. no alteration to the elements present.

Complete step by step answer:
There are five basic types of chemical reactions which are combination, single-displacement, double-displacement, decomposition and combustion. By analysing the reactants as well as products of the given reactions will allow you to place them into one of these different types of reaction. Few reactions can fit even into more than one category.
Now, in the given chemical reaction, magnesium reacts with hydrochloric acid in order to form a magnesium chloride salt and releases the hydrogen gas. The balanced chemical equation is stated below:
$Mg+2HCl\to MgC{l}_2+H_2$
In this reaction, $$Mg$$ acts as a reducing agent while conc. $$HCl$$ behaves like an oxidising agent. Thus,$$Mg$$ does not displace the hydrogen from $$HCl$$ rather oxidised by the $$HCl$$. Now, this is not an acid-base reaction, but it is a redox reaction, as you see $$Mg$$ gets oxidised to $$M{g}^{2+}$$ and $$HCl$$ gets reduced to $$H_2$$.

Note: A balanced chemical equation simply obeys the law of conservation of mass. Balancing the chemical equations is a significant guiding principle in chemistry. A balanced chemical equation helps you to predict the amount of reactants required and the amount of products formed.