PORTAGE LEARNING CHEM 104 ACTUAL EXAM SCRIPT 2026 FULL QUESTIONS AND CORRECT ANSWERS ALREADY PASSED

PORTAGE LEARNING CHEM 104 ACTUAL EXAM
SCRIPT 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED

◉ Oxidation number for HBr. Answer: H: +1
Br: -1


◉ Oxidation numbers for HNO3. Answer: H: +1
N: +5
O: -2


◉ Redox Reaction Definition. Answer: Type of reaction involving the
transfer of electrons between two species


◉ Define oxidation. Answer: loss of electrons


◉ Define reduction. Answer: gain of electrons


◉ Ag + Au^+1 = Ag^+1 +Au. Answer: Ag: oxidized (lost electron)
Au: reduced (gained electron)

, ◉ Write half reactions for:
Ag + Au^+1 = Ag^+1 +Au. Answer: Ag = Ag^+1 + 1e-
Au^+1 + 1e- = Au


◉ electrochemical cell. Answer: Device that contains the reactants and
products of a redox system, but prevents physical contact between the
reactants the transfer of electrons is indirect and requires an external
circuit


◉ Galvanic cell. Answer: An electrochemical cell in which a
spontaneous redox reaction takes place


◉ Half cell. Answer: Contains the redox conjugate pair of a single
reactant (there's two per galvanic cell)


◉ Anode. Answer: The cell that contains the oxidation reaction


◉ Cathode. Answer: The cell that contains the reduction reaction


◉ Salt bridge. Answer: A tube filled with inert electrolyte solution that
connects the anode and the cathode


◉ Inert electrode. Answer: Provides or accepts electrons in the redox
reaction