The formula of caustic soda is

Options

A. `Na_(2)CO_(3)`
B. NaOH
C. CaOCl
D. `Ca(NO_(3))_(2)`

Explanation

To determine the formula of caustic soda, follow these steps:

### Step 1: Identify the Common Name
Caustic soda is a common name for a chemical compound.

### Step 2: Recognize the Chemical Name
The chemical name associated with caustic soda is sodium hydroxide.

### Step 3: Write the Chemical Formula
The chemical formula for sodium hydroxide is NaOH.

### Step 4: Confirm the Information
Caustic soda (sodium hydroxide) is widely used in various applications, including as a reagent in chemical reactions, and in the manufacturing of soap and paper.

### Final Answer
The formula of caustic soda is **NaOH**.

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