Self-Assessment Quiz

1		Consider the galvanic cell shown in this animation. Zn (s) + Cu2+ (aq) ® Cu (s) + Zn2+ (aq) When the cell is running spontaneously, which choice has only true statements?
			A)	The copper electrode loses mass and the zinc electrode is the cathode.
			B)	The copper electrode gains mass and the copper electrode is the cathode.
			C)	The zinc electrode gains mass and the zinc electrode is the anode.
			D)	The zinc electrode loses mass and the zinc electrode is the cathode.
2		A certain galvanic cell has for its spontaneous cell reaction: Zn + HgO ® ZnO + Hg Which is the half-reaction occurring at the anode?
			A)	HgO + 2 e- ® Hg + O2-
			B)	Zn2+ + 2 e- ® Zn
			C)	Zn ® Zn2+ + 2 e-
			D)	ZnO + 2 e- ® Zn
3		A certain galvanic cell has for its spontaneous cell reaction: Zn + HgO ® ZnO + Hg Which is the half-reaction occurring at the cathode?
			A)	HgO + 2 e- ® Hg + O2-
			B)	Hg ® Hg2+ + 2 e-
			C)	Zn ® Zn2+ + 2 e-
			D)	ZnO + 2 e- ® Zn