CHEM 120 EXAM 2 NEWEST 2026 TEST BANK – 300 REAL EXAM QUESTIONS & VERIFIED ANSWERS | ACE CHAMBERLAIN INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY

CHEM 120 EXAM 2 (CHAMBERLAIN) NEWEST 2026
ACTUAL EXAM TEST BANK| CHEM 120
INTRODUCTION TO GENERAL, ORGANIC &
BIOLOGICAL CHEMISTRY EXAM 2 REVIEW WITH 300
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+ (MOST RECENT!!)


Question 1
Balance the following equation: ___ H₂ + ___ O₂ → ___ H₂O.
What is the coefficient for O₂?
A. 1
B. 2
C. 3
D. 4

Correct Answer: A

Rationale: Balanced equation: 2H₂ + 1O₂ → 2H₂O. Coefficient
for O₂ is 1.




1

,Question 2
Balance: ___ N₂ + ___ H₂ → ___ NH₃. What is the coefficient
for H₂?
A. 1
B. 2
C. 3
D. 4

Correct Answer: C

Rationale: N₂ + 3H₂ → 2NH₃. Coefficient for H₂ is 3.



Question 3
Balance: ___ Fe + ___ O₂ → ___ Fe₂O₃. What is the
coefficient for Fe?
A. 2
B. 3
C. 4
D. 6

Correct Answer: C

Rationale: 4Fe + 3O₂ → 2Fe₂O₃. Coefficient for Fe is 4.


2

,Question 4
Balance: ___ C₃H₈ + ___ O₂ → ___ CO₂ + ___ H₂O. What is
the coefficient for O₂?
A. 3
B. 4
C. 5
D. 6

Correct Answer: C

Rationale: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O. Oxygen coefficient =
5.



Question 5
Balance: ___ Al + ___ HCl → ___ AlCl₃ + ___ H₂. What is the
coefficient for HCl?
A. 3
B. 4
C. 5
D. 6

Correct Answer: D

Rationale: 2Al + 6HCl → 2AlCl₃ + 3H₂. HCl coefficient = 6.
3

, Question 6
Balance: ___ Ca(OH)₂ + ___ H₃PO₄ → ___ Ca₃(PO₄)₂ + ___
H₂O. What is the coefficient for H₂O?
A. 3
B. 4
C. 5
D. 6

Correct Answer: D

Rationale: 3Ca(OH)₂ + 2H₃PO₄ → Ca₃(PO₄)₂ + 6H₂O. H₂O
coefficient = 6.



Question 7
Balance: ___ Na + ___ H₂O → ___ NaOH + ___ H₂. What is
the coefficient for Na?
A. 1
B. 2
C. 3
D. 4

Correct Answer: B
4