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Question
Which of the following is a redox reaction?
Options
\[\ce{2CuSO4 + 4KI -> Cu2I2 + 2K2SO4 + I2}\]
\[\ce{SO2 + H2O -> H2SO3}\]
\[\ce{Na2SO4 + BaCl2 -> BaSO4 + 2NaCl}\]
\[\ce{CuSO4 + 4NH3 -> [Cu(NH3)4]SO4}\]
MCQ
Solution
\[\ce{2CuSO4 + 4KI -> Cu2I2 + 2K2SO4 + I2}\]
Explanation:
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