Consider the following E o values E F e 3 + / F e 2 + o = 0.77 V E S n 2 + / S n o = - 0.14 V Under standard conditions the potential for the reaction S n ( s ) + 2 F e 3 + ( a q ) → 2 F e 2 + ( a q ) + S n 2 + ( a q )

Question

Consider the following E o values E F e 3 + / F e 2 + o = 0.77 V E S n 2 + / S n o = - 0.14 V Under standard conditions the potential for the reaction S n ( s ) + 2 F e 3 + ( a q ) → 2 F e 2 + ( a q ) + S n 2 + ( a q ), 1.68 V, 0.91 V, 0.63 V, 1.46 V

MARKS App · Accepted Answer

S n ( s ) + 2 F e 3 + ( a q ) → 2 F e 2 + ( a q ) + S n 2 + ( a q ) E cell o = E reduction o cathode − E reduction o anode E cell o = 0.77 − ( − 0.14 ) ∴ E cell o = − 0.91 V

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