CH4 C2H2+H2

The chemical equation given is:

CH4 + C2H2 → C2H4 + H2

To balance this equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation.

Let's start with carbon (C). On the left side, we have 1 carbon atom from CH4 and 2 carbon atoms from C2H2, resulting in a total of 3 carbon atoms. On the right side, we have 2 carbon atoms from C2H4. To balance the carbon atoms, we need to multiply CH4 by 2:

2CH4 + C2H2 → C2H4 + H2

Next, let's balance the hydrogen (H) atoms. On the left side, we have 4 hydrogen atoms from CH4 and 2 hydrogen atoms from C2H2, resulting in a total of 6 hydrogen atoms. On the right side, we have 4 hydrogen atoms from C2H4 and 2 hydrogen atoms from H2. The hydrogen atoms are already balanced.

The balanced equation is:

2CH4 + C2H2 → C2H4 + H2