at position 7 7 Fill in the Blank 0.8 points Question at position 7 Calculate the standard cell potential for each of the following reactions and determine whether the reaction would take place spontaneously in aqueous solutions at 25C. Round each numerical answer to TWO places past the decimal. If your answer is negative, include the sign. Part A: 2 Br (aq) + Sn2+ (aq) Br2 (l) + Sn (s) Ecell = Question Blank 1 of 8 type your answer... V This reaction is Question Blank 2 of 8 nonspontaneous . Part B: Br2 (l) + 2 I (aq) 2 Br (aq) + I2 (s) Ecell = Question Blank 3 of 8 type your answer... V This reaction is Question Blank 4 of 8 spontaneous . Part C: Ca (s) | Ca2+ (1 M) Cd2+ (1 M) | Cd (s) Ecell = Question Blank 5 of 8 type your answer... V This reaction is Question Blank 6 of 8 spontaneous . Part D: Cu+ (aq) + Fe3+ (aq) Cu2+ (aq) + Fe2+ (aq) Ecell = Question Blank 7 of 8 type your answer... V This reaction is Question Blank 8 of 8 spontaneous .

Refer to the table of standard reduction potentials provided below. E red Half Reaction Br2 (1) + 2e" - 2Br" +1.06V (aq) Fest (aq) + e" - Felt (aq) +0.77V 12 (1) + 2e - 21 (aq) +0.54V Cut (aq) + 2e" - Cu (s) +0.34 V Cuz* (aq) + e" - Cut (0q) +0.15 V Sn (aq) + 2 e- - Sn2+ (aq) +0.15 V 2H* (aq) + 2e" - H2(g) 0.00 V Sn2+ (aq) + 2 e - - Sn (5) -0.14V Cd2+ (aq) + 2e- - Cd (5) -0.40 V Fe2+ (aq) + 2e- - Fe (5) -0.44 V Cast (aq) + 2 e- - Ca (s) -2.87V BACKGROUND Standard cell potential (E" ) can be calculated using the standard reduction potential (E"red) for each electrode: Excell = E"redd (cathode) - Eyed (anode)