Question

Review Constants Periodic Table ras in the left column to the appropriate blanks in the sentences on the right. A mixture of copper and gold metals that is subjected to electrorefining contains tellurium as an impurity. The standard reduction potential between tellurium and its lowest common oxidation state, Te++, is: Reset Help Tet+ (aq) + 4e + Te(8) Ered = 0.57 V is not oxidized Cu2+ more active The standard reduction potential for Tett, 0.57 V is more than that of Cu2+, V. This means the is "easier to reduce than , but is harder to oxidize and less active than During electrorefining Cu from the crude anode and Te Te is likely to accumulate along with other impurities than Cu, in the so-called anode sludge. 0.43 Te4+ is oxidized 0.34 less active negative positive Request Answer

Answer 1

Standard reduction potential of Cu = +0.34 V

The blanks can be filled in order as:

1) positive

2) 0.34 V

3) Te⁴⁺

4) Cu²⁺

5) Te

6) Cu

7) is oxidized

8) is not oxidized

9) less active