Saved Bookmarks
| 1. |
Differentiate between roasting and calcination. Explain the two with the help of suitable chemical equations. |
|
Answer» Roasting: It is a process in which sulphide ore is heated in the presence of oxygen to convert into oxide. 2ZnS + 3O2 → 2ZnO + 2SO2 Calcination: It is a process in which carbonate ore is heated in the absence of air to form oxides. ZnCO3(s) \(\overset{Heat}{\longrightarrow}\) ZnO(s) + CO2 By reduction process Zn can be extracted from its ore. Reduction: 2ZnO + C → ZnO + CO2 |
|