Are these equations balanced or unbalanced
3. Cu+H2SO4 Yields CuSO4+H2
Balanced
4. 2Fe+3S Yields Fe2S3
Balanced
5.N2+H2 Yields NH3
Unbalanced
To determine whether these equations are balanced or unbalanced, we need to check if the number of atoms for each element is the same on both sides of the reaction arrow.
1. Cu + H2SO4 → CuSO4 + H2:
To balance this equation, we start by counting the number of atoms for each element. On the left side, we have 1 Cu and 1 H. On the right side, we have 1 Cu, 1 S, and 4 O (from SO4), and 2 H. The number of atoms is not balanced. To balance it, we can add a coefficient of 1 in front of CuSO4 and 2 in front of H2SO4:
Cu + H2SO4 → CuSO4 + 2H2. This equation is now balanced.
2. 2Fe + 3S → Fe2S3:
To balance this equation, we count atoms. On the left side, we have 2 Fe and 3 S. On the right side, we have 1 Fe and 3 S. The number of atoms is not balanced. To balance it, we can add a coefficient of 2 in front of Fe:
2Fe + 3S → Fe2S3. This equation is now balanced.
3. N2 + H2 → NH3:
To balance this equation, we count atoms. On the left side, we have 1 N and 2 H. On the right side, we have 1 N and 3 H. The number of atoms is not balanced. To balance it, we can add a coefficient of 2 in front of NH3:
N2 + 3H2 → 2NH3. This equation is now balanced.
So, equations 3 and 4 are balanced, while equation 5 is unbalanced.