"Chlorine-type" laundry bleaches are in reality aqueous solution of 

Options

A. `HOCl`
B. `HClO_3`
C. `NaClO_3`
D. `NaOCl`

Answer

To solve the question regarding "chlorine-type" laundry bleaches, we need to identify the chemical species that these bleaches consist of. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Question
The question asks what "chlorine-type" laundry bleaches are in reality. We are given several options to choose from.

### Step 2: Analyze the Options
The options provided are:
1. H O C L (Hypochlorous acid)
2. H C L O 3 (Chloric acid)
3. N E C L O 3 (Sodium chlorate)
4. N O C L (Sodium hypochlorite)

### Step 3: Recall the Chemistry of Bleaching
Bleaching agents typically work through oxidation. Chlorine (Cl₂) is commonly used in bleaching processes. When chlorine gas is dissolved in water, it reacts to form hypochlorous acid (HClO) and hydrochloric acid (HCl):
\[ \text{Cl}_2 + \text{H}_2\text{O} \rightarrow \text{HCl} + \text{HClO} \]

### Step 4: Identify the Active Bleaching Agent
Hypochlorous acid (HClO) is known for its bleaching properties due to its ability to act as an oxidizing agent. This means that in laundry bleaches, the active component that contributes to the bleaching action is hypochlorous acid.

### Step 5: Conclusion
Based on the analysis, the correct answer to the question is:
**H O C L (Hypochlorous acid)**

### Final Answer
Chlorine-type laundry bleaches are in reality aqueous solutions of **H O C L**.

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