The standard reduction potential data at 25 ° C is given below. ( array |l|l|l|l| & List I & & List II A. & E^o ( Fe ³⁺, Fe ) & P. & -0.18 V B. & E^o (4 H ₂ O 4 H⁺+4 O H ) & Q. & -0.4 V C & E^o (C u²⁺+C u 2 C u⁺ ) & R. & -0.04 V D. & E^o (C

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The standard reduction potential data at 25 ° C is given below. ( array |l|l|l|l| & List I & & List II A. & E^o ( Fe ³⁺, Fe ) & P. & -0.18 V B. & E^o (4 H ₂ O 4 H⁺+4 O H ) & Q. & -0.4 V C & E^o (C u²⁺+C u 2 C u⁺ ) & R. & -0.04 V D. & E^o (C r³⁺, C r²⁺ ) & S. & -0.83 V array )

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Correct answer: D. a-r;b-s;c-p;d-q;

P.) Fe 3 + + e - ⟶ Fe 2 + ; Δ G I o = - 1 F 0 . 7 7 Fe 2 + + 2 e - ⟶ Fe ; Δ G II o = - 2 F - 0 . 4 4 ---------------------------------- Add Fe 3 + + 3 e - ⟶ Fe ; Δ G III o = - 3 F E o Fe 3 + / Fe - 3 F E o Fe 3 + / Fe = - 0 . 7 7 F + 0 . 8 8 F = 0 . 11 F E Fe 3 + / Fe o = - 0 . 1 1 3 = - 0 . 0 3 7 ≅ - 0 . 0 4 V Q.) 2 H 2 O ⟶ O 2 g + 4 H (aq) + + 4 e - (Oxidation half reaction) E ° = - 1 . 23 V O 2 g + 2 H 2 O + 4 e - ⟶ 4 OH (aq) - (reduction half reaction) E ° = + 0 . 40 V It's an electrochemical cell, adding 4 H 2

The standard reduction potential data at 25 ° C is given below. ( array |l|l|l|l| & List I & & List II A. & E^o ( Fe ³⁺, Fe ) & P. & -0.18 V B. & E^o (4 H ₂ O 4 H⁺+4 O H ) & Q. & -0.4 V C & E^o (C u²⁺+C u 2 C u⁺ ) & R. & -0.04 V D. & E^o (C r³⁺, C r²⁺ ) & S. & -0.83 V array )

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