Question

Write symbolic representation for the following word equation and balance them:
(d) Aluminium + chlorine → aluminium chloride

Answer 1

Symbolic representation:
$Al$ + <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ${Cl}_2$ → <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ${AlCl}_3$
To equalize Cl, multiply ${Cl}_2$ and ${AlCl}_3$ by 3 and 2 respectively.
$Al$ + 3 ${Cl}_2$ → 2 ${AlCl}_3$
To equalize Al, multiply it by 2.
2$Al$ + 3 ${Cl}_2$ → 2 ${AlCl}_3$
The equation is balanced.