KMnO4 + H2SO4 + H2S will give K2SO4 + MnSo4 + H20 + S
Mn changes from +7 on the left to +2 on the right.
S(from H2S) changes from -2 on the left to 0 on the right.
Show your work if you get stuck.
The balanced chemical equation for the reaction you mentioned is:
2 KMnO4 + 8 H2SO4 + 10 H2S → K2SO4 + 2 MnSO4 + 8 H2O + 10 S
To balance this equation, you need to make sure that the number of atoms of each element is the same on both sides of the equation. Here's how you can balance it step by step:
1. Start by balancing the elements other than hydrogen and oxygen. In this equation, we have potassium (K), manganese (Mn), sulfur (S), and oxygen (O).
- The left side has 2 K, 2 Mn, 10 S, and 16 O (from 8 H2SO4 and 2 KMnO4).
- The right side has 2 K, 2 Mn, 10 S, and 16 O (from K2SO4 and 2 MnSO4).
2. Next, balance the hydrogen atoms by adding H2 on the right side.
- The left side has 8 H (from 8 H2SO4).
- Add 8 H2O on the right side to balance the hydrogen atoms.
- Now, the left side has 8 H (from 8 H2SO4) and the right side has 16 H (from 8 H2O).
3. Finally, balance the oxygen atoms by adjusting the number of KMnO4 on the left side.
- The left side has 16 O (from 8 H2SO4 and 2 KMnO4).
- To balance it, add 4 KMnO4 on the left side.
- The right side now has 16 O (from K2SO4 and 2 MnSO4).
Now, the balanced chemical equation is:
4 KMnO4 + 8 H2SO4 + 10 H2S → 2 K2SO4 + 2 MnSO4 + 8 H2O + 10 S
This means that when potassium permanganate (KMnO4), sulfuric acid (H2SO4), and hydrogen sulfide (H2S) react, they will produce potassium sulfate (K2SO4), manganese sulfate (MnSO4), water (H2O), and sulfur (S) according to the balanced equation.