A Cadmium Metal Electrode Is Added To A Cadmium Nitrate Solution Which Is Connected Via A Potassium Nitrate Salt Brid 1 (33.18 KiB) Viewed 74 times
A Cadmium Metal Electrode Is Added To A Cadmium Nitrate Solution Which Is Connected Via A Potassium Nitrate Salt Brid 2 (34.89 KiB) Viewed 74 times
+ A cadmium metal electrode is added to a cadmium nitrate solution, which is connected via a potassium nitrate salt bridge to a solution of chromium nitrate solution with a chromium electrode to produce a galvanic cell. Which metal is reduced and what is the standard cell potential? Cd2+ (aq) + 2e → Cd(s); E= -0,40 V Cr3+ (aq) + 3e → Cr(s); E= -0.74 V K*(aq) + e → K(s); E°= -2.92 V Oa. Cadmium, 0.34 V Ob. Chromium, -0.34 V Oc. Cadmium, 2.52 V Od. Chromium, 0.34 V Oe. Cadmium, -0.34 V
The two half cells that make up a battery are shown below with their reduction potentials: Co2 (aq) + 2e → Co(s); E= -0.28 V Sn4+ (aq) + 2e → Sn2+ (aq); E= 0.15 V What is the equation for the galvanic cell made with these two half equations? Oa. Co2+ (aq) + Sn*+ (aq) → Co(s) + Sn2+ (aq) Ob. None of the other options Oc. Co(s) + Sn4+ (aq) → Co2+ (aq) + Sn2(aq) Od. Co(s) + Sn2+ (aq) → Co2+ (aq) + Snº+ (aq) Oe. Co2+ (aq) + Sn2+ (aq) → Co(s) + Sn"(aq)
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