Question

What happen when we take 56g cao and add 18g water?

Answer 1

Answer:

if we add 56 gram cao in 18 gram in water (h2o) the highly exothermic reaction takes place the reaction are as follow cao + h2o____ ca(oh)2 + h2

Answer 2

Answer:

Explanation:

You should not have used the word “combine” in your question. The correct word is “mix”. In chemistry the word “combine” has a special meaning. We say, for example, “chemically combined together”. Elements combine to form compounds, and can only do so in specific proportions. When mixed, calcium oxide and water react together highly exothermically to form calcium hydroxide:

[math]CaO(s) + H_2O(l)\rightarrow Ca(OH)_2(s)[/math] [math]\Delta H<<0[/math]

If water is dripped slowly onto a lump of calcium oxide, a hissing is heard as excess water is turned to steam by the heat produced in the reaction