Order these electrodes by standard potential, lowest first
Exercise and reference answers
- Steps
- K⁺/K at −2.93 V
- Mg²⁺/Mg at −2.37 V
- Cr³⁺/Cr at −0.74 V
- Hg²⁺/Hg at 0.79 V
- Ag⁺/Ag at 0.80 V
Explanation
Values as printed in your syllabus: K⁺/K = −2.93 V, Mg²⁺/Mg = −2.37 V, Cr³⁺/Cr = −0.74 V, Hg²⁺/Hg = 0.79 V, Ag⁺/Ag = 0.80 V. Source: syllabus Chemistry Part I, Ch 2 Electrochemistry.
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