We can arrange the various metal ions according to their ability to accept elect

Question

We can arrange the various metal ions according to their ability to accept electrons and to become reduced to the corresponding metal. Table 24.1 shows the reduction half-reactions for a series of common metal/metal ion half-cells, arranged in order of increasing EMF. value is for the reduction of gold(lll) chloride complex ion Use the E^0 value for the Cu/Cu^+2 half reaction given in value for cell combination 1 to calculate the E^0 value for the Sn/Sn^+2 half cell reaction. Use the values for 5 and 6 to predict the potential for cell combination 4. How does this value compare with your experimental value from 4 ?

Explanation / Answer

(6)

E0cell =E0Cu2+/Cu- E0Sn2+/Sn

0.148 = + 0.34 - E0Sn2+/Sn

E0Sn2+/Sn = -0.138

E0Sn/Sn2+ = + 0.138

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