Ozone reacts with `K_4 Fe(CN)_6` to form

Options

A. `Fe_2 O_3`
B. `Fe(OH)_3`
C. `Fe(OH)_2`
D. `K_3 Fe(CN)_6`

Explanation

To solve the problem of what ozone reacts with potassium ferrocyanide (K₄[Fe(CN)₆]) to form, we can follow these steps:

### Step 1: Identify the Reactants
We have two reactants in this reaction:
- Ozone (O₃)
- Potassium ferrocyanide (K₄[Fe(CN)₆])

### Step 2: Understand the Nature of Ozone
Ozone is known to be a strong oxidizing agent. This means that it can cause oxidation reactions, where it increases the oxidation state of certain elements in compounds.

### Step 3: Determine the Oxidation State Changes
In potassium ferrocyanide, iron (Fe) is in the +2 oxidation state. When ozone reacts with it, it oxidizes the iron to a +3 oxidation state, resulting in potassium ferricyanide (K₃[Fe(CN)₆]).

### Step 4: Write the Reaction
The reaction can be represented as follows:
\[ \text{O}_3 + \text{K}_4[\text{Fe(CN)}_6] + \text{H}_2\text{O} \rightarrow \text{K}_3[\text{Fe(CN)}_6] + \text{O}_2 + \text{KOH} \]

### Step 5: Balance the Reaction
To balance the reaction, we can multiply the coefficients:
- Multiply K₄[Fe(CN)₆] by 2 to balance the potassium and iron atoms.
- The balanced reaction becomes:
\[ 2 \text{O}_3 + 2 \text{K}_4[\text{Fe(CN)}_6] + 2 \text{H}_2\text{O} \rightarrow 2 \text{K}_3[\text{Fe(CN)}_6] + 2 \text{O}_2 + 2 \text{KOH} \]

### Step 6: Identify the Product
From the balanced reaction, we can see that the main product formed is potassium ferricyanide (K₃[Fe(CN)₆]).

### Conclusion
Thus, when ozone reacts with potassium ferrocyanide, it forms potassium ferricyanide along with oxygen and potassium hydroxide.

### Final Answer
The product formed is **K₃[Fe(CN)₆]** (potassium ferricyanide).

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