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PORTAGE LEARNING CHEM 104 EXAMINATION TEST 2026 QUESTIONS WITH ANSWERS GRADED A+

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PORTAGE LEARNING CHEM 104 EXAMINATION TEST 2026 QUESTIONS WITH ANSWERS GRADED A+

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PORTAGE LEARNING CHEM 104
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PORTAGE LEARNING CHEM 104

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PORTAGE LEARNING CHEM 104 EXAMINATION
TEST 2026 QUESTIONS WITH ANSWERS
GRADED A+



◉ 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
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