Question

when an oxide of metal A is added to water, a lot of heat is evolved. this compound is used for whitewashing. identify A. write the formula of the oxide of A and the compound used for whitewashing. write the common names and uses of A, oxide of A and hydroxide of A. Design an activity to test the chemical nature of hydroxide of A.​

Answer 1

Explanation:

CaCo 3 ( Calcium hydroxide )

Answer 2

Answer:

caco3 is the formula of calcium hydroxide. it is used for whitewashing and its common name is quicklime or slaked lime.