1|Page
ACS GENERAL CHEMISTRY EXAM 2
COMPLETELY UPDATED 2025–2026 EDITION |
VERIFIED QUESTIONS & 100% ACCURATE
ANSWERS | GUARANTEED A+ PERFORMANCE
True or False? A spontaneous reaction is a fast reaction. - ANSWER: False
True or False? Spontaneous processes proceed without outside intervention. -
ANSWER: True
True or False? Only exothermic processes are spontaneous. - ANSWER: False
True or False? Spontaneous processes require continuous addition of energy from
an external source. - ANSWER: False
How does flexibility correlate to entropy? - ANSWER: Greater conformational
flexibility correlates well with higher entropy
Two cubic containers have gas samples at the same temperature and pressure. One
container is larger than the other. Which has the higher entropy? Why? -
ANSWER: The larger container has the higher entropy due to it having more
particles
Which compound has the highest standard molar entropy (S^o)?
, 2|Page
C3H8(g) C2H6(g) CH4(g) - ANSWER: C3H8(g)
Which compound has the highest standard molar entropy (S^o)?
CCl4(l) CHCl3(l) CH2Cl2(l) - ANSWER: CCl4(l)
Which compound has the highest standard molar entropy (S^o)?
CO2(l) CO2(g) CS2(g) - ANSWER: CS2(g)
How are entropy and volume related? - ANSWER: As volume increases, so does
entropy
Translational Motion - ANSWER: Molecule travels from one location to another
Rotational Motion - ANSWER: Molecule spins about an imaginary axis
Vibrational Motion - ANSWER: Two atoms of a molecule move toward and away
from each other
The spontaneous reaction
A -> B + C
increases the system entropy by 132.0 J/(K & mol). What is the entropy change of
the surroundings? - ANSWER: > 132.0 J/(K & mol)
ACS GENERAL CHEMISTRY EXAM 2
COMPLETELY UPDATED 2025–2026 EDITION |
VERIFIED QUESTIONS & 100% ACCURATE
ANSWERS | GUARANTEED A+ PERFORMANCE
True or False? A spontaneous reaction is a fast reaction. - ANSWER: False
True or False? Spontaneous processes proceed without outside intervention. -
ANSWER: True
True or False? Only exothermic processes are spontaneous. - ANSWER: False
True or False? Spontaneous processes require continuous addition of energy from
an external source. - ANSWER: False
How does flexibility correlate to entropy? - ANSWER: Greater conformational
flexibility correlates well with higher entropy
Two cubic containers have gas samples at the same temperature and pressure. One
container is larger than the other. Which has the higher entropy? Why? -
ANSWER: The larger container has the higher entropy due to it having more
particles
Which compound has the highest standard molar entropy (S^o)?
, 2|Page
C3H8(g) C2H6(g) CH4(g) - ANSWER: C3H8(g)
Which compound has the highest standard molar entropy (S^o)?
CCl4(l) CHCl3(l) CH2Cl2(l) - ANSWER: CCl4(l)
Which compound has the highest standard molar entropy (S^o)?
CO2(l) CO2(g) CS2(g) - ANSWER: CS2(g)
How are entropy and volume related? - ANSWER: As volume increases, so does
entropy
Translational Motion - ANSWER: Molecule travels from one location to another
Rotational Motion - ANSWER: Molecule spins about an imaginary axis
Vibrational Motion - ANSWER: Two atoms of a molecule move toward and away
from each other
The spontaneous reaction
A -> B + C
increases the system entropy by 132.0 J/(K & mol). What is the entropy change of
the surroundings? - ANSWER: > 132.0 J/(K & mol)
