Sodium hypochlorite relative molecular mass:74.44.

Acid is stronger than hypochlorous acid, then sodium hypochlorite reacts with hydrochloric acid to form sodium chloride and hypochlorous acid, and the chemical equation of the reaction is:NaClO+HCl=NaCl+HClO.

Introduction of Chemical Equation

Chemical Equation (Chemical Equation), also known as a chemical reaction equation, is a formula that uses a chemical formula (organic substances in organic chemistry generally use the structural short form) to represent the chemical reaction of a substance.

Chemical equations not only indicate the reactants, products and reaction conditions. At the same time, the stoichiometric number represents the relationship between the amount of each reactant, product material, through the relative molecular mass or relative atomic mass can also indicate the relationship between the mass of each substance, that is, the mass ratio between the substances. For gaseous reactants and products, the volume ratio can also be derived directly from the stoichiometric number.

Techniques

To correctly write the chemical formula of a substance, one is to skillfully memorize the symbols of the elements, the second is to write the chemical formula of compounds, to skillfully memorize the valence of the common elements and groups of atoms, the third is to write the chemical formula of compounds to comply with the principle of positive and negative valence of the elements of the algebraic sum of zero, and fourth is to grasp the general way of writing the chemical formula. In summary, this is the essentials of writing chemical formulas.

Chemical equations written in the common error analysis

One is a set of "formula". Some students write chemical equations, although the attention of the chemical formula can not be fabricated out of thin air, but did not master the typical memory and type of derivation method, coupled with the lack of basic knowledge of chemistry, and thus remember a familiar chemical equation as a general formula to apply, committed the error of the set of "formula".

The second is to write the reverse reaction. The reason for this kind of error is that middle school students confuse chemical equations with mathematical equations, randomly write chemical equations in reverse. We know that mathematical equations can be shifted, or the equals sign left and right ends of the reverse; and chemical equations and mathematical equations are two concepts that are absolutely different.

While some chemical reactions are reversible, most are not. As for some reactions that can proceed in the opposite direction under the same or different conditions, they are not necessarily reversible, but are types of reactions that have completely opposite meanings.