Question

Write the balanced chemical equation for the following reaction.
Hydrogen reacts with chlorine to form hydrogen chloride.

Answer 1

Hint: A chemical equation represents the conversion of reactant into product. The chemical equation represents the chemical formula of the reactant on the left side of an arrow and chemical formula of product on the right side of the arrow.

Complete answer:
When two chemical compounds react they form some other compounds. The reacting compounds are known as reactants and the formed compounds are known as products. The whole action is defined as a chemical reaction. The representation of a chemical reaction in form of the chemical formula of each species is known as a chemical equation.

Simply, a chemical equation includes reactants, products with their state if known, and an arrow pointing from reactant to products which shows the conversion of reactant into the product.Hydrogen reacts with chlorine to form hydrogen chloride.

A reaction was brought about between hydrogen and chlorine. So, the reactants are hydrogen and chlorine. By the reaction hydrogen chloride forms. So, the product is hydrogen chloride. The chemical formula of hydrogen is ${\text{H}}_{\text{2}}$ and chlorine is $\text{C}{\text{l}}_{\text{2}}$ and product is HCl.
The chemical equation between hydrogen and chlorine is shown as follows:
${\text{H}}_2+\text{C}{\text{l}}_{\text{2}}\to 2\text{HCl}$

Note: If the reaction is in equilibrium then the double arrow is used to show the conversion of reactant to product or product to the reactant. If the rate of reaction is high in a particular direction, then the arrow in that direction can be somewhat longer than the arrow in the opposite direction. Catalyst and reagent which are used in a chemical reaction, are also shown above the arrow. Many times small molecules such as water that are removed during the reaction are also shown below the arrow. If the reaction is taking place in presence of heat then the delta sign is represented above the arrow.