GKFix MCQ Question

Which of the following metals will displace hydrogen from dilute acids?

• A. Cu2+ + 2e– → Cu(s) 0.34
• B. Ag+ + e– → Ag(s) 0.80
• C. Fe2+ + 2e– → Fe(s) –0.44
• D. Hg2+ + e– → Hg22+ 0.92