Question

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287 24) Predict the products of the cell reaction when a molten salt mixture of sodium bromide and calcium fluoride is electrolyzed (spectator ions are not considered to be products) Aj sodium and bromine cakium and bromine sodium and fluorine D) cakium and fluorine E) cakcium bromide

Answer 1

Na^+ + e^- rightarrow Na E^0 = -2.71 V 2 BR^- rightarrow Br_2 + 2e^- E^0 = -1.09 v Ca^2 + + 2e^- rightarrow Ca E^0 = -2.86 V 2 F^- rightarrow F_2 + 2 e^- E^0 = -2.87 v at anode (high oxidation potential) will select 2 Br^- rightarrow Br_2 + 2 e^- (at anode) at cathode (high reduction potential) will select Na^+ + e^- rightarrow Na (at cathode)

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