Answer:
The balanced equations are:
CO(g) + 2H₂(g) → CH₃OH(l).
2KMnO₄(s) → K₂MnO₄(s) + MnO₂(s) + O₂(s).
Step-by-step explanation:
- The balanced equations should apply the conservation of mass.
- The conservation of mass is that the mass does not created or destroyed but it can convert from state to another.
- In the chemical reactions, the no. of different atoms should be the same in the reactants and products side.
1) The first reaction: SF₄(g) + 2F₂(g) → SF₆(g).
This reaction is not balanced that it contains 8 atoms of F in the reactants side, while it contains only 6 atoms in the products side.
to be balanced it should be: SF₄(g) + F₂(g) → SF₆(g).
2) The second reaction: CO(g) + 2H₂(g) → CH₃OH(l).
It is a balanced reaction that it contains the same no. of (C (1), O (1), and H(4)) in both reaction sides.
3) The third reaction: C(s) + O₂(g) → CO(g).
This reaction is not balanced that it contains 2 atoms of O in the reactants side, while it contains only 1 atom in the products side.
to be balanced it should be: C(s) + 1/2O₂(g) → CO(g).
4) The fourth reaction: 2KMnO₄(s) → K₂MnO₄(s) + MnO₂(s) + O₂(s).
It is a balanced reaction that it contains the same no. of (K (2), Mn (2), and O(8)) in both reaction sides.
- So, the balanced reactions are:
CO(g) + 2H₂(g) → CH₃OH(l).
2KMnO₄(s) → K₂MnO₄(s) + MnO₂(s) + O₂(s).