C₂H₆ + 2Cl₂ => C₂H₄Cl₂ + 2HCl
Or from left to right:
1, 2, 1, 2
Explanation:
To balance an equation, start by counting the number of atoms of each element on both sides.
C₂H₆ + Cl₂ => C₂H₄Cl₂ + HCl
C 2 C 2
H 6 H 5
Cl 2 Cl 3
We should increase the number of hydrogen atoms (H) on the right (products).
C₂H₆ + Cl₂ => C₂H₄Cl₂ + 2HCl
C 2 C 2
H 6 H 6
Cl 2 Cl 4
Increase the number of chlorine atoms (Cl) on the left (reactants).
C₂H₆ + 2Cl₂ => C₂H₄Cl₂ + 2HCl
C 2 C 2
H 6 H 6
Cl 4 Cl 4
The equation is now balanced because there are the same number of atoms on each side.
C₂H₆ + 2Cl₂ => C₂H₄Cl₂ + 2HCl
or, if your drop down menus need you to write "1".
1C₂H₆ + 2Cl₂ => 1C₂H₄Cl₂ + 2HCl
The correct format is not to write the "1".