18. Which of the following is true concerning a galvanic cell? A) Oxidation occurs at the...

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18. Which of the following is true concerning a galvanic cell? A) Oxidation occurs at the anode and is where anions move towards B) Oxidation occurs at the cathode and is where anions move towards Oxidation occurs at the anode and is where cations move towards Oxidation occurs at the cathode and is where cations move towards E) Reduction occurs at the anode and is where anions move towards C) D) 19. Consider an electrochemical cell constructed from the following half cells, linked by a KCI salt bridge. - a Fe electrode in 1.0 M FeCl₂ solution - a Sn electrode in 1.0 M Sn(NO3)2 solution When the cell is running spontaneously, which choice includes only true statements and no false ones? A) The tin electrode loses mass and the tin electrode is the cathode. B) The tin electrode gains mass and the tin electrode is the cathode. C) The iron electrode gains mass and the iron electrode is the anode. D) The iron electrode loses mass and the iron electrode is the cathode. E) The iron electrode gains mass and the iron electrode is the cathode. 20. Consider the following standard reduction potentials in acid solution: Al³+ + 3e → Al(s) AgBr(s) + e → Ag(s) + Br Sn+ + 2e → Sn²+ Fe³+ + e→→ Fe²+ Fe³+ B) Fe²+, C) Br. D) A1³+. E) Al. E°(V) -1.66 +0.07 The strongest oxidizing agent among those shown above is A) +0.14 +0.77 21. Using a table of standard electrode potentials, decide which of the following statements is completely true. Page 5 A) Cu2+ can oxidize H₂, and Fe can reduce Mn²+. B) Ni2+ can oxidize Cu²+, and Fe²+ can reduce H. C) Fe²+ can oxidize H₂, and Fe2+ can reduce Au³+. D) Br₂ can oxidize Ni, and H₂ can reduce Mn²+. E) H can oxidize Fe, and Ni can reduce Br₂. 18. Which of the following is true concerning a galvanic cell? A) Oxidation occurs at the anode and is where anions move towards B) Oxidation occurs at the cathode and is where anions move towards Oxidation occurs at the anode and is where cations move towards Oxidation occurs at the cathode and is where cations move towards E) Reduction occurs at the anode and is where anions move towards C) D) 19. Consider an electrochemical cell constructed from the following half cells, linked by a KCI salt bridge. - a Fe electrode in 1.0 M FeCl₂ solution - a Sn electrode in 1.0 M Sn(NO3)2 solution When the cell is running spontaneously, which choice includes only true statements and no false ones? A) The tin electrode loses mass and the tin electrode is the cathode. B) The tin electrode gains mass and the tin electrode is the cathode. C) The iron electrode gains mass and the iron electrode is the anode. D) The iron electrode loses mass and the iron electrode is the cathode. E) The iron electrode gains mass and the iron electrode is the cathode. 20. Consider the following standard reduction potentials in acid solution: Al³+ + 3e → Al(s) AgBr(s) + e → Ag(s) + Br Sn+ + 2e → Sn²+ Fe³+ + e→→ Fe²+ Fe³+ B) Fe²+, C) Br. D) A1³+. E) Al. E°(V) -1.66 +0.07 The strongest oxidizing agent among those shown above is A) +0.14 +0.77 21. Using a table of standard electrode potentials, decide which of the following statements is completely true. Page 5 A) Cu2+ can oxidize H₂, and Fe can reduce Mn²+. B) Ni2+ can oxidize Cu²+, and Fe²+ can reduce H. C) Fe²+ can oxidize H₂, and Fe2+ can reduce Au³+. D) Br₂ can oxidize Ni, and H₂ can reduce Mn²+. E) H can oxidize Fe, and Ni can reduce Br₂.

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