Question

6. Refer to Fig. 1. The salt bridge is to prevent wholesale mixing of the two solutions. Assume that the bridge is removed and that wholesale mixing of the two solutions occurred as shown here: UUUUUUUUUUUUUUUUUUU Znso, IM - Cuso(1M) (a) What value should the voltmeter show? (0.5 mark) (b) There is a reaction. Give an equation for it and specify where it occurs. (1 mark) znis) + Cu2+ →

Answer 1

writing the cell notation znal zn504(im) ll C4504 Cim) | Cu(B) Anodic compartment Cathodie Compartment At Anode oxidation reaction occur (loss of e) Zn() -→ Zn2+ (ap) +2e- E = 0.76V At Cathode Reduction reaction occur ainger) cepatcap.) +de scule E = 0.34v Net reaction: 2nas) + Cut Cap.) - znttal) + Cu (6) . E cel e Anode * E" cathode = 0.760+ 0.34v - V 1. [wat Eule Calculated using Nemst equation Full 'eoogal log campaign - at [2n2t]= [capt] - im n=2 Eucl = 1.1 - Dogal log ein = log o ) = 0 Full - IV so vol meta Show = TV b) Env) + Curt (ob.) — Zn?* (24.) +18)