Saved Bookmarks
| 1. |
A compound is used as drying agent as such or as soda lime with NaOH and it is used on a very large scale as a building material. (a) Which is this compound? (b) How can we prepare this compound? (c) What are the properties of this compound? |
|
Answer» (a) Calcium oxide (b) It can be prepared by heating lime stone in a rotary kiln at 1070-1270 K. (c) Pure calcium oxide is an amorphous white solid of very high melting point. It is sparingly soluble in water. Calcium oxide readily absorbs moisture and carbon dioxide. |
|