Chemical formula of quick lime is __________.
Answer & explanation
Correct answer: option 1
The correct answer is option 1. CaO.
The chemical formula for quick lime is CaO.
Here's why:
Quick lime: This common name refers to calcium oxide, a chemical compound formed by one calcium atom (Ca) bonded to one oxygen atom (O).
Formula breakdown:
Ca: Represents one calcium atom.
O: Represents one oxygen atom.
Combining these elements with their respective subscript numbers, we get the formula CaO.
The other options you provided are:
\(CO_2\): This formula represents carbon dioxide, a completely different molecule with one carbon atom and two oxygen atoms.
\(CaCO_3\): This formula represents calcium carbonate, also known as limestone, another distinct compound commonly found in rocks and seashells.
\(Ca(OH)_2\): This formula represents slaked lime, which is calcium hydroxide. It is formed by the reaction of quick lime \((CaO)\) with water \((H_2O)\).