(a) Give the electrolyte of a named secondary electrochemical cell. (b) Consider the cell represented as shown below: \(Cu_{(s)}Cu^{2+}_{(aq)}/Zn^{2+}_{(aq)}/Zn{(s)}\) (i) What does the vertical double stroke represent? (ii) Which of the metals forms the cathode? (iii) Name the electrode to which each half-cell should be coupled if the oxidation potential of the half-cells are to be determined.
Explanation
(a)(i) Dilute tetraoxosulphate (VI) acid i.e H\(_2\)SO\(_4\); (b)(i) Salt bridge (ii) Copper metal is the cathode in the Zinc - Zn\(^{2+}\) voltaic cell. (iii) Specially prepared platinum electrode over which hydrogen gas is bubbled
