Chemical equations: how to solve most effectively

A chemical equation can be called visualization of a chemical reaction using signs of mathematics and chemical formulas. Such an action is a reflection of some reaction, during which new substances appear.

Chemical tasks: Species

A chemical equation is a sequence of chemical reactions. They are based on the law of conservation of mass of any substances. There are only two types of reactions:

• Compounds - these include substitution reactions (replacement of atoms of complex elements with atoms of simple reagents), exchange (replacement with constituents of two complex substances), neutralization (reaction of acids with bases, formation of salt and water).
• Decompositions - the formation of two or more complex or simple substances from one complex, but their composition is simpler.

Chemical reactions can also be divided into types: exothermic (occur with the release of heat) and endothermic (absorption of heat).

How to solve the equations of chemical reactions

This question is of concern to many students. We offer a few simple tips that will help you learn how to solve chemical equations:

• Desire to understand and master. You can not deviate from your goal.
• Theoretical knowledge. Without them, it is impossible to make up even an elementary formula for the connection.
• The correctness of recording a chemical problem - even the slightest mistake in the condition will nullify all your efforts in solving it.

It is desirable that the process of solving chemical equations itself is fascinating for you. Then the chemical equations (how to solve them and what points to remember, we'll discuss in this article) will cease to be problematic for you.

Problems that are solved using the equations of chemical reactions

Such tasks include:

• The determination of the mass of a component by a given mass of another reagent.
• Assignments for the combination of "mass-mole".
• Calculations for the "volume-mole" combination.
• Examples with the use of the term "excess".
• Calculations using reagents, one of which is not devoid of impurities.
• Tasks for the disintegration of the result of the reaction and the production losses.
• Tasks for finding a formula.
• Problems in which the reagents are provided in the form of solutions.
• Tasks containing mixtures.

Each of these types of tasks includes several subtypes, which are usually discussed in detail at the first school chemistry lessons.

Chemical equations: how to solve

There is an algorithm that helps to cope with almost any task from this difficult science. To understand how to properly solve chemical equations, you need to adhere to a certain pattern:

• When writing the reaction equation, do not forget to arrange the coefficients.
• Determine the way in which you can find unknown data.
• Correctness of application in the chosen formula of proportions or use of the concept "quantity of substance".
• Pay attention to the units of measurement.

In the end, it's important to check the problem. In the process of solving, you could admit an elementary error that affected the outcome of the decision.

The basic rules for the formulation of chemical equations

If you follow the correct sequence, then the question of what chemical equations are, how to solve them, will not bother you:

• Formulas of substances that enter into the reaction (reagents) are written on the left side of the equation.
• Formulas of substances that are formed as a result of the reaction, are written already on the right side of the equation.

The formulation of the reaction equation is based on the law of conservation of the mass of substances. Consequently, both sides of the equation must be equal, that is, with the same number of atoms. This can be achieved if the coefficients are correctly arranged before the formulas of substances.

The arrangement of the coefficients in the chemical equation

The algorithm for arranging the coefficients is as follows:

• Counting in the left and right side of the equation of atoms of each element.
• Determination of the varying number of atoms in an element. You also need to find the NOK.
• The coefficients are obtained by dividing the NO. To the indices. Be sure to put these figures before the formulas.
• The next step is to recalculate the number of atoms. Sometimes it becomes necessary to repeat the action.

Equalization of the parts of the chemical reaction occurs with the help of coefficients. Calculation of indices is done through valence.

To successfully compile and solve chemical equations, it is necessary to take into account the physical properties of the substance, such as volume, density, mass. It is also necessary to know the state of the reacting system (concentration, temperature, pressure), to understand the units of measurement of these quantities.

To understand the question of what chemical equations are, how to solve them, it is necessary to use the basic laws and concepts of this science. To successfully calculate such problems, you must also remember or master the skills of mathematical operations, be able to perform actions with numbers. We hope, with our advice, it will be easier for you to cope with chemical equations.