Which fo the following is a redox reaction ?A. `Na_2SO_4 + BaCl_2 rarr BaSO_4 + 2NaCl`B. ` SO_2 + H_2O rarr H_2SO_3`C. `2 CuSO_4 + 4Kl rarr 2Cu l +2K_2SO_4`+I_2D. ` CuSO_4 + 4NH_3 rarr [Cu(NH_3)_4]SO_4`

Which fo the following is a redox reaction ?A. `Na_2SO_4 + BaCl_2 rarr

1.	Which fo the following is a redox reaction ?A. `Na_2SO_4 + BaCl_2 rarr BaSO_4 + 2NaCl`B. ` SO_2 + H_2O rarr H_2SO_3`C. `2 CuSO_4 + 4Kl rarr 2Cu l +2K_2SO_4`+I_2D. ` CuSO_4 + 4NH_3 rarr [Cu(NH_3)_4]SO_4`
Answer» Correct Answer - C Reaction (1) is a double displacement reaction, reaction(2) involves hydration, and reaction (4) involves the formation fo a complex compound. Reaction (3) is a redox reaction as the oxidation number of Cu is reduced while that of `I` is increased `3overset(+2)(C)uSO_(4)+4Koverset(-1)(I) rarr2 overset(+2)(C)uI+2K_(2)SO_(4)+overset(0)(I_(2))`

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Which fo the following is a redox reaction ?A. `Na_2SO_4 + BaCl_2 rarr BaSO_4 + 2NaCl`B. ` SO_2 + H_2O rarr H_2SO_3`C. `2 CuSO_4 + 4Kl rarr 2Cu l +2K_2SO_4`+I_2D. ` CuSO_4 + 4NH_3 rarr [Cu(NH_3)_4]SO_4`

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