What happens when : Ozone reacts with dry iodine

Answer

To solve the question of what happens when ozone reacts with dry iodine, we can follow these steps:

### Step 1: Write the chemical formulas
- Ozone is represented as \( O_3 \).
- Dry iodine is represented as \( I_2 \).

### Step 2: Write the reaction
When ozone reacts with dry iodine, the reaction can be written as:
\[ O_3 + I_2 \]

### Step 3: Identify the products
The reaction between ozone and dry iodine produces tetraiodine nonoxide, which has the formula \( I_4O_9 \), along with oxygen gas \( O_2 \).

### Step 4: Write the balanced equation
To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides. The balanced equation is:
\[ 9O_3 + 2I_2 \rightarrow I_4O_9 + 9O_2 \]

### Step 5: Identify the characteristics of the product
The product \( I_4O_9 \) is known as tetraiodine nonoxide, and it is a dark yellow solid.

### Final Answer
When ozone reacts with dry iodine, it produces tetraiodine nonoxide (\( I_4O_9 \)) and oxygen gas (\( O_2 \)). The balanced equation for the reaction is:
\[ 9O_3 + 2I_2 \rightarrow I_4O_9 + 9O_2 \]

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