19. Which of the following is the best reducing agent? Cl2 + 2e– → 2Cl– E° = 1.36 V Mg2+ + 2e– → Mg E° = –2.37 V 2H+ + 2e– → H2 E° = 0.00 V
(A) Cl-
(B) Cl2
(C) H2
(D) Mg
(E) Mg2+

相關試題

相關試卷