mdfdesktop.blogg.se - Combustion equations 4 chemical equations and stoichiometry

Law of Conservation of Mass Matter cannot be created or lost in any chemical reaction.

Notice that the number of hydrogen atoms and oxygen atoms on the reactant side and the product side is equal.

Coefficients are multipliers, in this equation 2 in front of the H2 indicates that there are 2 molecules of H2 in the equation.

The numbers in front of the compounds (H2 and H2O) are called stoichiometriccoefficients.

The materials you make are called Products.

The materials you start with are called Reactants.

In this equation we see that there are different numbers of oxygen and hydrogen atoms on both sides of the equation, which requires an adjustment.- E N D - Presentation TranscriptĬhemical Equations and Stoichiometry Chapter 4 Chapter 4Ĭhemical Equations 2H2(g) + O2(g)2H2O(g) Chapter 4Ĭhemical Equations 2H2(g) + O2(g)2H2O(g)

Butane gas (CH 4 ) combines with oxygen (O 2 ) to irreversibly generate carbon dioxide (CO 2 ) and water (H 2 O)

This chemical equation represents the combustion reaction of butane. The formulas of the reactants are represented on the left side of the chemical equation and those of the products on the right side, both separated by a full-headed arrow in the case of irreversible reactions (which only proceed from left to right) or a double arrow in the case of reversible reactions (they take place in both directions). To describe chemical reactions we use a notation, the chemical equation. A chemical transformation can be evidenced by the change in physical properties of the solution, such as: change in color, release or absorption of heat, formation of precipitates or release of gases. In a chemical reaction, a set of substances called reactants are transformed into others called products. Written by: Germán Fernández Category: chemical reactions