Question

Complete the following equation and balance.

$\mathrm{AgCl}\left(\mathrm{s}\right)\stackrel{\mathrm{Light}}{\to }\mathrm{Ag}\left(\mathrm{s}\right)+\mathrm{\_\_\_\_\_\_\_\_\_\_}$

Answer 1

Chemical equation - $\mathrm{AgCl}\left(\mathrm{s}\right)\stackrel{\mathrm{Light}}{\to }\mathrm{Ag}\left(\mathrm{s}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)$

Balancing the chemical equation -

• The unbalanced chemical equation must be obtained by writing the chemical formulae of the reactants and the products.
• Algebraic variables are assigned to each species (as stoichiometric coefficients) in the unbalanced chemical equation.
• The equations for each element are listed together to form a system of equations.
• Now that the smallest value of each variable is obtained, their values can be substituted into the chemical equation obtained.

Reactant side	Product side
Ag = 1 x 2 = 2	Ag = 1 x 2 = 2
Cl = 1 x 2 = 2	Cl = 2

Balanced chemical equation -

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