What is the correct name of the product formed when water is added to calcium oxide?
Answer and explanation
Correct answer: Calcium hydroxide (slaked lime)
Calcium oxide reacts with water to form calcium hydroxide, also called slaked lime: \(\mathrm{CaO + H_2O \rightarrow Ca(OH)_2}\). This is an exothermic reaction. Calcium carbonate is not formed by adding water; its formation requires a calcium compound and carbon dioxide.
Frequently asked questions
What is the correct answer to this question?
Calcium hydroxide (slaked lime)
Why is this the correct answer?
Calcium oxide reacts with water to form calcium hydroxide, also called slaked lime: \(\mathrm{CaO + H_2O \rightarrow Ca(OH)_2}\). This is an exothermic reaction. Calcium carbonate is not formed by adding water; its formation requires a calcium compound and carbon dioxide.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
