Question

When calcium oxide is added to water, it completely dissolves in water without forming bubbles. What products are formed in this reaction?
Ca and H₂
Ca and H₂O₂
Ca(OH)₂
CaH₂

Answer 1

Explanation:

When calcium oxide (CaO)is added to water,

CaO + H2O ----------> Ca(OH)2

therefore the required answer is option c) Ca(OH) 2

Answer 2

Given info : calcium oxide is added to water, it completely dissolves in water without forming bubbles.

To find : the products are formed in this reaction is...

solution : calcium oxide reacts with water very vigorously. it is an exothermic combination reaction. a large amount of heat is produced when one mole of calcium oxide is added with one mole of water and slaked lime is produced as a single product of this reaction.  

reaction of calcium oxide and water is given as..

CaO + H₂O ⇒ Ca(OH)₂  + heat

therefore the product is formed in this reaction is Ca(OH)₂.