Question

What is a chemical equation? Write the equation for the reaction between sodium and chlorine.

Answer 1

Chemical equation

• Chemical Equation is the representation of a chemical reaction using symbols and equations.

$\underset{\mathrm{Reactants}}{\mathrm{A}+\mathrm{B}}\to \underset{\mathrm{Products}}{\mathrm{C}+\mathrm{D}}$

• A and B are the reactants in this equation which are written on the left-hand side.
• C and D are the products in this equation which are written on the right-hand side.
• For example

$\underset{\mathrm{Silver}\mathrm{Chloride}}{2\mathrm{AgCl}\left(\mathrm{s}\right)}\stackrel{\mathrm{Sunlight}}{\to }\underset{\mathrm{Silver}}{2\mathrm{Ag}\left(\mathrm{s}\right)}+\underset{\mathrm{Chlorine}}{{\mathrm{Cl}}_2\left(\mathrm{g}\right)}$

The equation between Sodium (Na) and Chlorine (Cl)

Sodium will react with Chlorine to form Sodium Chloride

$\mathrm{Sodium}+\mathrm{Chlorine}\to \mathrm{Sodium}\mathrm{Chloride}$

$\underset{\mathrm{Sodium}}{2\mathrm{Na}\left(\mathrm{s}\right)}+\underset{\mathrm{Chlorine}}{{\mathrm{Cl}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Sodium}\mathrm{Chloride}}{2\mathrm{NaCl}\left(\mathrm{s}\right)}$