What is the chemical formula of Quick lime?
Answer & explanation
Correct answer: option 2
The correct answer is option 2. \(CaO\).
Calcium oxide (Quick lime) reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.
CaO(s) + H2O(l) → Ca(OH)2 (aq) + Heat
(Quick lime) (slaked lime)
CaCO3 is limestone
CaSO4.2H2O is Gypsum