Chemistry-Balancing Redox Reactions
NEET Chemistry Balancing Redox Reactions MCQ Question
Type: MCQ-diagram based-Medium-Class 11
Consider a diagram showing the redox reaction of iodine with thiosulphate ions: I2(aq) + 2 S2O3^2–(aq) → 2I^–(aq) + S4O6^2–(aq). Which label correctly identifies the change in oxidation state of iodine in this reaction?
A
Iodine is reduced from 0 to -1.
B
Iodine is oxidized from -1 to 0.
C
Iodine is reduced from +1 to 0.
D
Iodine is oxidized from 0 to +1.
Correct Answer
Option A
Detailed Explanation
In the reaction, iodine (I2) is reduced from an oxidation state of 0 to -1, forming iodide ions (I–). This is a typical redox reaction where iodine undergoes reduction.
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