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(a). IF both (A) and (R) are correct and...

(a). IF both (A) and (R) are correct and (R) is the correct explanation of (A).
(b). If both (A) and (R) are correct but (R) is not the correct explanation of (A).
(c). If (A) is correct, but (R) is incorrect.
(d). If (A) is incorrect, but (R) is correct. ltbr. (e) if both (A) and (R) are incorrect.
Q. Assertion (A): IN the reaction i_(2) is a oxidant. `2S_(2)O_(3)^(2-)+I_(2)toS_(4)O_(6)^(2-)+2I^(ɵ)`
Reason (R): During oxidation loss of electron takes place.

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The correct Answer is:
To solve the given question, we need to analyze the assertion (A) and the reason (R) provided. ### Step-by-Step Solution: 1. **Identify the Assertion (A)**: - Assertion (A): In the reaction, \( I_2 \) is an oxidant. - The reaction is given as: \[ 2 S_{2}O_{3}^{2-} + I_{2} \rightarrow S_{4}O_{6}^{2-} + 2 I^{-} \] 2. **Identify the Reason (R)**: - Reason (R): During oxidation, loss of electrons takes place. 3. **Determine the Oxidation States**: - For \( I_2 \), the oxidation state is 0 (as it is in its elemental form). - For \( I^{-} \), the oxidation state is -1. - For \( S_{2}O_{3}^{2-} \), we can calculate the oxidation state of sulfur (S): \[ 2x + 3(-2) = -2 \implies 2x - 6 = -2 \implies 2x = 4 \implies x = +2 \] - Therefore, the oxidation state of sulfur in \( S_{2}O_{3}^{2-} \) is +2. - For \( S_{4}O_{6}^{2-} \): \[ 4x + 6(-2) = -2 \implies 4x - 12 = -2 \implies 4x = 10 \implies x = +2.5 \] - Thus, the oxidation state of sulfur in \( S_{4}O_{6}^{2-} \) is +2.5. 4. **Analyze the Changes in Oxidation States**: - In this reaction, sulfur is oxidized from +2 to +2.5, indicating an increase in oxidation state (loss of electrons). - \( I_2 \) is reduced to \( I^{-} \), indicating a gain of electrons. 5. **Conclusion about Assertion (A)**: - Since \( I_2 \) is gaining electrons (being reduced), it acts as an oxidant. Therefore, assertion (A) is correct. 6. **Conclusion about Reason (R)**: - The reason (R) states that during oxidation, loss of electrons takes place, which is indeed true. Therefore, reason (R) is also correct. 7. **Determine the Relationship between (A) and (R)**: - Since both the assertion (A) and reason (R) are correct, and the reason (R) correctly explains the assertion (A), we conclude that the correct answer is: - **(a)** If both (A) and (R) are correct and (R) is the correct explanation of (A). ### Final Answer: **(a)** If both (A) and (R) are correct and (R) is the correct explanation of (A).
To solve the given question, we need to analyze the assertion (A) and the reason (R) provided. ### Step-by-Step Solution: 1. **Identify the Assertion (A)**: - Assertion (A): In the reaction, \( I_2 \) is an oxidant. - The reaction is given as: \[ ...
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