STATEMENT 1 Corrosion of iron is essentially an electrochemical phenomenon
STATEMENT 2 : Corrosion reaction at anode : `2Fe(s)rarr2Fe^(3+)+6e^(-)`
STATEMENT 3: Corrosion reaction at cathode : `O_(2)(g)+4H^(+)(aq)+4e^(-)rarr2H_(2)O(l)`

Options

A. TTT
B. TFT
C. TFF
D. FFT

Answer

To analyze the statements regarding the corrosion of iron, we will evaluate each statement step by step.

### Step 1: Evaluate Statement 1
**Statement 1**: "Corrosion of iron is essentially an electrochemical phenomenon."

**Explanation**: Corrosion is indeed an electrochemical process. It involves the transfer of electrons between iron and the environment (usually oxygen and water), leading to the oxidation of iron. This process can be classified as a redox reaction, where oxidation and reduction occur simultaneously.

**Conclusion**: Statement 1 is **True**.

### Step 2: Evaluate Statement 2
**Statement 2**: "Corrosion reaction at anode: `2Fe(s) → 2Fe^(3+) + 6e^(-)`"

**Explanation**: The anode is where oxidation occurs. In the case of iron corrosion, iron (Fe) loses electrons. The correct half-reaction at the anode for iron corrosion is:
\[ \text{Fe(s)} \rightarrow \text{Fe}^{2+} + 2e^{-} \]
This means that for every 1 mole of iron, 2 moles of electrons are released, resulting in the formation of Fe²⁺ ions. The statement provided incorrectly states that 2Fe produces 2Fe³⁺ and 6 electrons, which is not accurate.

**Conclusion**: Statement 2 is **False**.

### Step 3: Evaluate Statement 3
**Statement 3**: "Corrosion reaction at cathode: `O_(2)(g) + 4H^(+)(aq) + 4e^(-) → 2H_(2)O(l)`"

**Explanation**: At the cathode, reduction occurs. The correct cathodic reaction in acidic conditions is:
\[ \text{O}_{2}(g) + 4\text{H}^{+}(aq) + 4e^{-} \rightarrow 2\text{H}_{2}O(l) \]
This reaction shows that oxygen is reduced by gaining electrons and reacting with protons (H⁺) to form water. The statement is accurate as it describes the correct reaction occurring at the cathode.

**Conclusion**: Statement 3 is **True**.

### Overall Conclusion
- Statement 1: True
- Statement 2: False
- Statement 3: True

Based on the evaluations, the correct option is **TFT** (True, False, True).

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