Yellow color of chlorine water fades because of

Options

A. Form HCl & HOCl
B. Clhorine gas escapes
C. `ClO_()+H_(2)`
D. `Cl_(2)O`

Explanation

To understand why the yellow color of chlorine water fades, we can break down the explanation into several steps:

### Step 1: Understanding Chlorine Water
Chlorine water is a solution of chlorine gas (Cl₂) dissolved in water. The chlorine imparts a yellow color to the solution.

### Step 2: Reaction of Chlorine with Water
When chlorine water is left to stand, chlorine reacts with water. The chemical reactions that occur are:
\[ \text{Cl}_2 + \text{H}_2\text{O} \rightarrow \text{HCl} + \text{HOCl} \]
Here, chlorine (Cl₂) reacts with water (H₂O) to form hydrochloric acid (HCl) and hypochlorous acid (HOCl).

### Step 3: Formation of Nascent Oxygen
The hypochlorous acid (HOCl) can further dissociate:
\[ \text{HOCl} \rightarrow \text{HCl} + \text{O} \]
This reaction produces nascent oxygen (O), which is a highly reactive form of oxygen.

### Step 4: Bleaching Action
The nascent oxygen acts as an oxidizing agent and can react with colored compounds, leading to their decolorization. This is why chlorine water is also known as a bleaching agent. The reaction with colored substances results in them becoming colorless.

### Step 5: Conclusion
As a result of these reactions, the yellow color of chlorine water fades and eventually becomes colorless due to the formation of HCl and HOCl, and the bleaching action of nascent oxygen.

### Final Answer
The yellow color of chlorine water fades because of the formation of HCl and HOCl, leading to the bleaching action of nascent oxygen.

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