Question

What is the chemical name of slaked lime ?

• A. Calcium oxychloride
• B. Calcium chloride
• C. Calcium oxide
• D. Calcium hydroxide

Hint:

Remember the "lime" family: Limestone = Calcium Carbonate (\(CaCO_3\)); Quicklime = Calcium Oxide (\(CaO\)); Slaked Lime = Calcium Hydroxide (\(Ca(OH)_2\)).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
This question asks for the systematic chemical name corresponding to the common name "slaked lime".

Step 2: Detailed Explanation:
Let's identify the compounds: \[\begin{array}{rl} \bullet & \text{Calcium oxide (\(CaO\)): Its common name is quicklime.} \\ \bullet & \text{When quicklime reacts with water, it forms slaked lime. The process is called slaking.} \\ \bullet & \text{The chemical name for the compound \(Ca(OH)_2\) is Calcium hydroxide.} \\ \bullet & \text{Calcium oxychloride (\(CaOCl_2\)): This is bleaching powder.} \\ \bullet & \text{Calcium chloride (\(CaCl_2\)): This is a salt.} \\ \end{array}\]

Step 3: Final Answer:
The chemical name of slaked lime is Calcium hydroxide.