Potassium was fused with sulfur. The resulting salt was treated with hydrochloric acid. The gas released during this process
November 11, 2020 | Education
| Potassium was fused with sulfur. The resulting salt was treated with hydrochloric acid. The gas released during this process was passed through a solution of potassium dichromate in sulfuric acid. The precipitated yellow substance was filtered off and fused with aluminum. Write the equations for the described reactions.
2K + S → K2S
K2S + 2HCl → H2S↑ + 2KCl
3H2S + K2Cr2O7 + 4H2SO4 → 3S↓ + Cr2(SO4)3 + K2SO4 + 7H2O
3S + 2Al → Al2S3
