Question #18b0f

1 Answer
anor277
Mar 16, 2017

Well is #"calcium oxide"# known............?

Explanation:

#"Calcium oxide"# or quicklime is certainly known. Formally it contains #Ca^(2+)# and #O^(2-)# ions. The high melting and boiling points observed for this compound are certainly consistent with an ionic species.

In aqueous solution #CaO# reacts to give an aqueous solution of so-called #"slaked lime"#:

#CaO(s) + H_2O(l) rarr Ca(OH)_2(aq) +Delta#

This reaction is the basis for the cement and mortar industry, mix in aggregate, i.e. crushed stone, and you get concrete, the premier building material of modernity.

Related questions
See all questions in Ionic Bonding
Impact of this question
2651 views around the world
You can reuse this answer
Creative Commons License