he pelity to submitted score. Standard Reduction potentials (Ols) at 25 C F2 (g)

Question

he pelity to submitted score. Standard Reduction potentials (Ols) at 25 C F2 (g) 2 2F (aq) 2.870 o2(g) +4 Ho (a) +4 H OU) 1.229 2 H20) t 2 H2(g)2 OH (aq) 0.828 0.440 Fe (aq) +2 eFe (s) A 0.177 M neutral aqueous FeF2 solution is electrolyzed under 1 atm pressure using platinum electrodes (a) Write the half reactions expected to occur, taking into account the effect of the non-standard condtions on the electrode potentials (b) What is the expected decomposition potential? 3. Electrolysis of Aqueous Solution- Predict Reactions: This is group attempt 1 of 5 Back

Explanation / Answer

FeF2 (aq) -----------------. Fe^2+ (aq) + 2F^- (aq)

Half reaction at anode

2F^- (aq) -----------------------------> F2 + 2e^-     E0 = -2.87v

half reaction at cathode

Fe^2+ (aq) + 2e^- ------------------. Fe(s)           E0 = -0.44v

2F^- (aq) -----------------------------> F2(g) + 2e^-     E0 =- 2.87v

Fe^2+ (aq) + 2e^- ------------------. Fe(s)              E0 = -0.44v

-------------------------------------------------------------------------------------------

2F^- (aq) + Fe^2+ (aq) -------------> Fe(s) + F2(g)      E0cell = 3.31v

decomposition potenitial = 3.31v

cell potential E0cell = 2.43v

          

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