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Before trying to perform the balancing of chemical equations we must understand some concepts, such as the stoichiometric coefficient and the subscripts. Stoichiometric coefficient and subscripts In the following equations we can differentiate the subscripts of the stoichiometric coefficient. The most important thing to keep in mind is that the SUB-INDEX NEVER SE ... The mathematical expression of the Law of Speed ​​shows us the dependence of the reaction speed VR with the concentration of each reagent and with the temperature: K (T): It is the Reaction rate constant, which depends to a large extent on the reaction rate, VR, is a quantity that expresses the change of concentration of a reagent or product over time. For example, the conversion of graphite carbon to diamond carbon occurs in thousands of years, the oxidation of iron under atmospheric conditions. The principle of Le Chatelier affirms that if the chemical equilibrium is altered by the change of pressure, concentration or temperature, the position Balance is shifted to counteract the change and restore balance. If a chemical reaction is in equilibrium and undergoes a change in ... The equilibrium constant is a mathematical expression that allows us to know where the equilibrium of a certain reaction is moving. For a reaction of the type: aA + bB ↔ cC + dD the chemicals Guldberg and Waage expressed that the speed The chemical equilibrium is a state in which no changes are observed as time pas*es. That is, it is characterized because its macroscopic properties do not vary with time. CHEMICAL REACTIONS In order for a chemical reaction to be possible, matter is necessary. Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of several types of particles, each with mas* and size. The best-known examples of material particles are the electron, the proton and the neutron.