For the reaction `KO_(2)+H_(2)O+CO_(2)rarrKHCO_(3)+O_(2)`, the mechanism of reaction suggest.

Options

A. Acid-base reaction
B. Disproportionation reaction
C. Hydrolysis
D. Redox change

Explanation

To analyze the reaction \( KO_2 + H_2O + CO_2 \rightarrow KHCO_3 + O_2 \), we can break it down step by step to understand its mechanism.

### Step 1: Identify the Reactants and Products
The reactants are potassium superoxide (\( KO_2 \)), water (\( H_2O \)), and carbon dioxide (\( CO_2 \)). The products are potassium bicarbonate (\( KHCO_3 \)) and oxygen gas (\( O_2 \)).

### Step 2: Determine the Type of Reaction
This reaction can be classified into several types:
- **Acid-Base Reaction**: \( KO_2 \) acts as a base, while \( CO_2 \) can act as an acid.
- **Disproportionation Reaction**: In this reaction, the same element (oxygen) is both oxidized and reduced.
- **Hydrolysis Reaction**: The reaction involves the addition of water, leading to the formation of hydroxides and bicarbonates.
- **Redox Reaction**: There is a transfer of electrons, indicating oxidation and reduction processes.

### Step 3: Write the Balanced Reaction
To balance the reaction, we can break it down into two parts:
1. **Hydrolysis of \( KO_2 \)**:
\[ 4 KO_2 + 2 H_2O \rightarrow 4 KOH + 3 O_2 \]
Here, potassium superoxide reacts with water to produce potassium hydroxide and oxygen.

2. **Formation of Potassium Bicarbonate**:
\[ 4 KOH + 4 CO_2 \rightarrow 4 KHCO_3 \]
In this step, potassium hydroxide reacts with carbon dioxide to form potassium bicarbonate.

### Step 4: Summarize the Mechanism
The overall mechanism can be summarized as follows:
- The reaction starts with the hydrolysis of potassium superoxide, producing potassium hydroxide and oxygen.
- The potassium hydroxide then reacts with carbon dioxide to form potassium bicarbonate.
- Throughout this process, we observe acid-base behavior, disproportionation of oxygen, hydrolysis, and redox changes.

### Final Balanced Equation
Combining both parts, the overall balanced equation is:
\[ 4 KO_2 + 2 H_2O + 4 CO_2 \rightarrow 4 KHCO_3 + 3 O_2 \]

### Conclusion
The mechanism of the reaction involves hydrolysis, acid-base interaction, disproportionation, and redox processes.

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