UNIVERSITY OF NEW ENGLAND CHEM 1011 GENERAL CHEMISTRY II MIDTERM QUESTI… EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
University of New England
CHEM 1011 General Chemistry
II Midterm Questions &
Answers 2026-2027
(Rationales)
Verified Answers Exam Ready With Rationales
63 QUESTIONS
DOCUMENT OVERVIEW
This document contains 63 verified questions with correct answers and detailed rationales covering general
chemistry concepts. It is suitable for enhancing understanding of chemical principles and phenomena.
Students can utilize this resource for effective study, thorough review, and preparation for certification
exams.
CONTENTS
01 Intermolecular Forces Q1–Q12
02 Thermodynamics Q13–Q20
03 Kinetics and Reaction Rates Q21–Q30
04 Chemical Equilibrium Q31–Q41
Page 1
, 05 Acid-Base Chemistry Q42–Q52
06 Solutions and Concentrations Q53–Q58
07 Titration and pH Calculations Q59–Q63
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 63
At room temperature and 1 atm, methane (CH4) is a gas and carbon tetrachloride (CCl4) is a liquid. Which
intermolecular force is primarily responsible for the phase difference between methane and carbon tetrachloride?
CORRECT ANSWER
dispersion
RATIONALE
Dispersion forces, arising from temporary dipoles in nonpolar molecules, are the weakest intermolecular forces, allowing
methane to exist as a gas at room temperature due to its small size and low polarizability, while the larger, more polarizable
carbon tetrachloride exhibits stronger dispersion forces, resulting in its liquid state. This contrast highlights the significance
of molecular size and polarizability in determining phase behavior.
Q2 QUESTION 2 OF 63
The highly concentrated partial charge between an H atom and F, O, or N atoms is
CORRECT ANSWER
hydrogen bond
RATIONALE
Hydrogen bonds form when a hydrogen atom covalently bonded to a highly electronegative atom, such as fluorine, oxygen, or
nitrogen, experiences an attraction to another electronegative atom, resulting in a strong dipole-dipole interaction. This
unique bonding is critical in determining the properties of water and biological macromolecules like proteins and nucleic
acids.
Q3 QUESTION 3 OF 63
Page 2
, Which of the following will have the lowest boiling point?
CORRECT ANSWER
CH3CH3
RATIONALE
Molecular size and intermolecular forces dictate boiling points, with smaller molecules like CH3CH3 experiencing weaker
London dispersion forces compared to larger hydrocarbons. its low molecular weight results in a lower boiling point relative
to larger alkanes.
Q4 QUESTION 4 OF 63
Which of the following will have the lowest boiling point? C bonding
CORRECT ANSWER
CF4
RATIONALE
CF4 has a lower boiling point than other compounds due to its molecular structure, which results in weaker London dispersion
forces compared to polar molecules or those with stronger intermolecular attractions. The absence of significant dipole
interactions in CF4 contributes to its lower boiling point.
Q5 QUESTION 5 OF 63
Which of the following represents an endothermic process?
CORRECT ANSWER
vaporization
RATIONALE
Vaporization requires energy input to overcome intermolecular forces in a substance, absorbing heat from the surroundings
and resulting in a temperature decrease. This energy absorption characterizes endothermic processes, distinguishing them
from exothermic reactions that release heat.
Q6 QUESTION 6 OF 63
Page 3
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
University of New England
CHEM 1011 General Chemistry
II Midterm Questions &
Answers 2026-2027
(Rationales)
Verified Answers Exam Ready With Rationales
63 QUESTIONS
DOCUMENT OVERVIEW
This document contains 63 verified questions with correct answers and detailed rationales covering general
chemistry concepts. It is suitable for enhancing understanding of chemical principles and phenomena.
Students can utilize this resource for effective study, thorough review, and preparation for certification
exams.
CONTENTS
01 Intermolecular Forces Q1–Q12
02 Thermodynamics Q13–Q20
03 Kinetics and Reaction Rates Q21–Q30
04 Chemical Equilibrium Q31–Q41
Page 1
, 05 Acid-Base Chemistry Q42–Q52
06 Solutions and Concentrations Q53–Q58
07 Titration and pH Calculations Q59–Q63
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 63
At room temperature and 1 atm, methane (CH4) is a gas and carbon tetrachloride (CCl4) is a liquid. Which
intermolecular force is primarily responsible for the phase difference between methane and carbon tetrachloride?
CORRECT ANSWER
dispersion
RATIONALE
Dispersion forces, arising from temporary dipoles in nonpolar molecules, are the weakest intermolecular forces, allowing
methane to exist as a gas at room temperature due to its small size and low polarizability, while the larger, more polarizable
carbon tetrachloride exhibits stronger dispersion forces, resulting in its liquid state. This contrast highlights the significance
of molecular size and polarizability in determining phase behavior.
Q2 QUESTION 2 OF 63
The highly concentrated partial charge between an H atom and F, O, or N atoms is
CORRECT ANSWER
hydrogen bond
RATIONALE
Hydrogen bonds form when a hydrogen atom covalently bonded to a highly electronegative atom, such as fluorine, oxygen, or
nitrogen, experiences an attraction to another electronegative atom, resulting in a strong dipole-dipole interaction. This
unique bonding is critical in determining the properties of water and biological macromolecules like proteins and nucleic
acids.
Q3 QUESTION 3 OF 63
Page 2
, Which of the following will have the lowest boiling point?
CORRECT ANSWER
CH3CH3
RATIONALE
Molecular size and intermolecular forces dictate boiling points, with smaller molecules like CH3CH3 experiencing weaker
London dispersion forces compared to larger hydrocarbons. its low molecular weight results in a lower boiling point relative
to larger alkanes.
Q4 QUESTION 4 OF 63
Which of the following will have the lowest boiling point? C bonding
CORRECT ANSWER
CF4
RATIONALE
CF4 has a lower boiling point than other compounds due to its molecular structure, which results in weaker London dispersion
forces compared to polar molecules or those with stronger intermolecular attractions. The absence of significant dipole
interactions in CF4 contributes to its lower boiling point.
Q5 QUESTION 5 OF 63
Which of the following represents an endothermic process?
CORRECT ANSWER
vaporization
RATIONALE
Vaporization requires energy input to overcome intermolecular forces in a substance, absorbing heat from the surroundings
and resulting in a temperature decrease. This energy absorption characterizes endothermic processes, distinguishing them
from exothermic reactions that release heat.
Q6 QUESTION 6 OF 63
Page 3
