Question

part 1: video introduction to balancing
video example #1:
count the atoms
is this a balanced or unbalanced equation?
if unbalanced, show the work to make this a balanced equation.

Explanation:

Step1: Count atoms in un - balanced equation

For the un - balanced equation \(H_2+Cl_2
ightarrow HCl\), the number of \(H\) atoms on the left - hand side (LHS) is \(2\) (from \(H_2\)), and on the right - hand side (RHS) is \(1\) (from \(HCl\)). The number of \(Cl\) atoms on the LHS is \(2\) (from \(Cl_2\)), and on the RHS is \(1\) (from \(HCl\)).

Step2: Balance the equation

We need to make the number of \(H\) and \(Cl\) atoms equal on both sides. If we put a coefficient of \(2\) in front of \(HCl\), the equation becomes \(H_2 + Cl_2
ightarrow2HCl\).
Now, for \(H\) atoms: LHS has \(2\) (\(H_2\)) and RHS has \(2\times1 = 2\) (from \(2HCl\)). For \(Cl\) atoms: LHS has \(2\) (\(Cl_2\)) and RHS has \(2\times1=2\) (from \(2HCl\)).

Answer:

The un - balanced equation \(H_2+Cl_2
ightarrow HCl\) is unbalanced. The balanced equation is \(H_2 + Cl_2=2HCl\)