CHEM 162 EXPERIMENT 2 ELECTROCHEMISTRY ACTUAL TEST PAPER 2026 COMPLETE QUESTIONS AND SOLUTIONS GRADED A+

CHEM 162 EXPERIMENT 2 ELECTROCHEMISTRY
ACTUAL TEST PAPER 2026 COMPLETE
QUESTIONS AND SOLUTIONS GRADED A+

◉ Half Reaction E˚
Cr 3+ (aq) + 3e ↔Cr (s) -.74
Fe 2+ (aq) + 2e ↔Fe (s) -.440
Fe 3+ (aq) + e ↔Fe2+ (s) +.771
Sn 4+ (aq) + 2e ↔Sn 2+ (s) +.154


The standard cell potential (Eecell) for the voltaic cell based on the
reaction below is __________ V


Sn2+ (aq) + 2Fe3+ (aq) ↔ 2Fe2+ (aq) + Sn4+ (aq)


A) -0.46
B) +0.46
C) +0.617
D) +1.39 E) +1.21. Answer: C


◉ Half Reaction E˚

,Cr 3+ (aq) + 3e ↔Cr (s) -.74
Fe 2+ (aq) + 2e ↔Fe (s) -.440
Fe 3+ (aq) + e ↔Fe2+ (s) +.771
Sn 4+ (aq) + 2e ↔Sn 2+ (s) +.154


The standard cell potential (Eecell) for the voltaic cell based on the
reaction below is __________ V


3Sn4+ (aq) + 2Cr (s) ↔ 2Cr3+ (aq) + Sn4+ (aq)


A) -1.02
B) +2.53
C) -0.59 D) +0.89
E) +1.94. Answer: D


◉ Half Reaction E˚
Cr 3+ (aq) + 3e ↔Cr (s) -.74
Fe 2+ (aq) + 2e ↔Fe (s) -.440
Fe 3+ (aq) + e ↔Fe2+ (s) +.771
Sn 4+ (aq) + 2e ↔Sn 2+ (s) +.154

, The standard cell potential (Eecell) for the voltaic cell based on the
reaction below is __________ V


Cr (s) + 2Fe3+ (aq) ↔ 3Fe2+ (aq) + Cr3+ (aq)


A) +1.57
B) +2.99
C) +1.51
D) +3.05
E) -1.45. Answer: C


◉ What is the missing product from this reaction?


³²₁₅P →³²₁₆S + _____


A) ⁴₂He
B) ⁰₀ y
C) ⁰₁ p
D) ⁰₋₁e
E) ⁰₁e. Answer: D