Consider the following statements and arrange in order of true/false as given in the codes.
`S_1`:The reaction `2H_2O_2to2H_2O+O_2` is not an example of a redox reaction.
`S_2`:The equivalent mass of `K_2Cr_2O_7` in acidic medium is molar mass divided by two.
`S_3`: The equivalent mass of a substances can be calcualted without considering the reaction it undergoes.

Options

A. TFT
B. FTF
C. FFF
D. TTT

Explanation

To solve the question, we need to evaluate each of the three statements provided and determine whether they are true or false.

### Step-by-Step Solution:

1. **Evaluate Statement S1**:
- The reaction given is \(2H_2O_2 \rightarrow 2H_2O + O_2\).
- In this reaction, the oxidation state of oxygen in \(H_2O_2\) is -1.
- In \(H_2O\), the oxidation state of oxygen is -2, and in \(O_2\), it is 0.
- The change in oxidation states indicates that one oxygen atom is oxidized (from -1 to 0) and another is reduced (from -1 to -2).
- Since there are changes in oxidation states, this reaction is indeed a redox reaction.
- **Conclusion**: Statement S1 is **False**.

2. **Evaluate Statement S2**:
- The equivalent mass of \(K_2Cr_2O_7\) in acidic medium is stated to be the molar mass divided by 2.
- In acidic medium, the change in oxidation state for chromium (Cr) in \(K_2Cr_2O_7\) is from +6 to +3, which means the change is 3 for each Cr atom.
- Since there are 2 Cr atoms, the total change in oxidation state (n-factor) is \(2 \times 3 = 6\).
- The equivalent mass is calculated as molar mass divided by n-factor, which is molar mass divided by 6, not 2.
- **Conclusion**: Statement S2 is **False**.

3. **Evaluate Statement S3**:
- The statement claims that the equivalent mass of a substance can be calculated without considering the reaction it undergoes.
- The equivalent mass depends on the n-factor, which is determined by the specific reaction and the change in oxidation states.
- Therefore, the equivalent mass cannot be calculated without knowing the reaction.
- **Conclusion**: Statement S3 is **False**.

### Final Arrangement of Statements:
- S1: False
- S2: False
- S3: False

Thus, all three statements are false.

### Answer:
The correct option is that all statements (S1, S2, S3) are **False**.

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