How do you balance chemical equations?
In order to learn how to equalize chemical equations, you first need to highlight the main points and use the correct algorithm.
Key points
It is not difficult to build the logic of the process. To do this, we highlight the following stages:
Determination of the type of reagents (all reagents are organic, all reagents are inorganic, organic and inorganic reagents in one reaction)
Determination of the type of chemical reaction (reaction with a change in the oxidation states of components or not)
Isolation of a test atom or group of atoms
To solve chemical equations, it is enough to remember the basics of mathematics, what is on the left is equal to what is on the right. For example, 2 + 1 = 3.
Only chemical signs are added and the valence of the elements is taken into account.
Н + Сl = HCl – conditionally before hydrogen 1, before chlorine 1 and as a result we have 1 hydrogen and 1 chlorine.
NaOH + H2SO4 = Na2SO4 + H2O. Sodium on the right side is 1, and on the left side is 2, which means we set the coefficient 2.
2NaOH + H2SO4 = Na2SO4 + H2O. Hydrogen on the left side is 4, and on the right side 2, we set the coefficient 2.
2NaOH + H2SO4 = Na2SO4 + 2H2O. Sulfur on the right side is 1 and on the left 1 molecule. Oxygen on the left side is 8 and on the right side 8. The left and right sides are equal, so the equation is solved. The rest are solved by analogy.
