UNIVERSITY OF NEW ENGLAND CHEM 1011 GENERAL CHEMISTRY II MIDTERM EXAM QUES… 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 Exam Questions &
Answers 2026-2027
(Rationales)
Verified Answers Exam Ready With Rationales
70 QUESTIONS
DOCUMENT OVERVIEW
This document contains 70 verified questions with correct answers and detailed rationales, focusing on key
concepts in general chemistry. It serves as a comprehensive resource for students preparing for exams by
offering explanations that enhance understanding of the material. Ideal for study, review, and certification
preparation, this document ensures thorough mastery of essential chemistry principles.
CONTENTS
01 Intermolecular Forces Q1–Q12
02 Thermodynamics and Phase Changes Q13–Q22
03 Electrolytes and Conductivity Q23–Q30
04 Buffer Solutions Q31–Q39
05 Chemical Kinetics Q40–Q50
Page 1
, 06 Equilibrium and Reaction Quotients Q51–Q60
07 Acids and Bases Q61–Q70
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 70
An adhesive force
CORRECT ANSWER
is the result of intermolecular forces that attract different molecules together
RATIONALE
Adhesive forces arise from intermolecular interactions that facilitate attraction between dissimilar molecules, enhancing
phenomena such as capillary action. Understanding these forces is critical in fields like materials science and fluid dynamics, where
the behavior of liquids in contact with solids is paramount.
Q2 QUESTION 2 OF 70
Metallic solids
CORRECT ANSWER
are composed of atoms, with nuclei in a "sea" of delocalized electrons
RATIONALE
Metallic solids exhibit a unique bonding structure where positively charged metal ions are surrounded by a delocalized "sea" of
electrons, allowing for electrical conductivity and malleability. This electron delocalization is fundamental to the properties of
metals, contributing to their characteristic strength and ductility.
Q3 QUESTION 3 OF 70
Acetonitrile, CH3CN, is a common solvent used in organic chemistry labs. Acetonitrile evaporates very quickly at room
temperature and feels noticeably cold when evaporating. If ΔHvap for acetonitrile is 34.2 kJ/mol, how much heat is
removed when 2.3 g of acetonitrile evaporates?
CORRECT ANSWER
1.92 kJ
Page 2
, RATIONALE
Evaporation requires energy to overcome intermolecular forces, and the heat removed during this phase change can be calculated
using the formula q = n × ΔHvap, where n is the number of moles. For 2.3 g of acetonitrile, approximately 0.05 moles result in the
release of 1.92 kJ when multiplied by the given ΔHvap of 34.2 kJ/mol.
Q4 QUESTION 4 OF 70
A liquid is most likely to rise in a capillary tube when
CORRECT ANSWER
the adhesive forces are stronger than the cohesive forces
RATIONALE
Adhesive forces between the liquid and the tube material must exceed cohesive forces within the liquid for capillary action to
occur, allowing the liquid to ascend. This principle underlies the behavior of liquids in narrow spaces, demonstrating the
significance of intermolecular interactions in fluid dynamics.
Q5 QUESTION 5 OF 70
ΔHvap is
CORRECT ANSWER
the energy change when a substance changes from liquid phase to gas phase
RATIONALE
The enthalpy of vaporization (ΔHvap) quantifies the energy required to overcome intermolecular forces during the phase transition
from liquid to gas, reflecting the strength of these interactions. Understanding ΔHvap is critical for predicting vapor pressure and
boiling points in thermodynamic processes.
Q6 QUESTION 6 OF 70
Which of the following will have the strongest dipole-dipole attraction? CCl4, NCl3, BCl3, Cl2
CORRECT ANSWER
NCl3
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 Exam Questions &
Answers 2026-2027
(Rationales)
Verified Answers Exam Ready With Rationales
70 QUESTIONS
DOCUMENT OVERVIEW
This document contains 70 verified questions with correct answers and detailed rationales, focusing on key
concepts in general chemistry. It serves as a comprehensive resource for students preparing for exams by
offering explanations that enhance understanding of the material. Ideal for study, review, and certification
preparation, this document ensures thorough mastery of essential chemistry principles.
CONTENTS
01 Intermolecular Forces Q1–Q12
02 Thermodynamics and Phase Changes Q13–Q22
03 Electrolytes and Conductivity Q23–Q30
04 Buffer Solutions Q31–Q39
05 Chemical Kinetics Q40–Q50
Page 1
, 06 Equilibrium and Reaction Quotients Q51–Q60
07 Acids and Bases Q61–Q70
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 70
An adhesive force
CORRECT ANSWER
is the result of intermolecular forces that attract different molecules together
RATIONALE
Adhesive forces arise from intermolecular interactions that facilitate attraction between dissimilar molecules, enhancing
phenomena such as capillary action. Understanding these forces is critical in fields like materials science and fluid dynamics, where
the behavior of liquids in contact with solids is paramount.
Q2 QUESTION 2 OF 70
Metallic solids
CORRECT ANSWER
are composed of atoms, with nuclei in a "sea" of delocalized electrons
RATIONALE
Metallic solids exhibit a unique bonding structure where positively charged metal ions are surrounded by a delocalized "sea" of
electrons, allowing for electrical conductivity and malleability. This electron delocalization is fundamental to the properties of
metals, contributing to their characteristic strength and ductility.
Q3 QUESTION 3 OF 70
Acetonitrile, CH3CN, is a common solvent used in organic chemistry labs. Acetonitrile evaporates very quickly at room
temperature and feels noticeably cold when evaporating. If ΔHvap for acetonitrile is 34.2 kJ/mol, how much heat is
removed when 2.3 g of acetonitrile evaporates?
CORRECT ANSWER
1.92 kJ
Page 2
, RATIONALE
Evaporation requires energy to overcome intermolecular forces, and the heat removed during this phase change can be calculated
using the formula q = n × ΔHvap, where n is the number of moles. For 2.3 g of acetonitrile, approximately 0.05 moles result in the
release of 1.92 kJ when multiplied by the given ΔHvap of 34.2 kJ/mol.
Q4 QUESTION 4 OF 70
A liquid is most likely to rise in a capillary tube when
CORRECT ANSWER
the adhesive forces are stronger than the cohesive forces
RATIONALE
Adhesive forces between the liquid and the tube material must exceed cohesive forces within the liquid for capillary action to
occur, allowing the liquid to ascend. This principle underlies the behavior of liquids in narrow spaces, demonstrating the
significance of intermolecular interactions in fluid dynamics.
Q5 QUESTION 5 OF 70
ΔHvap is
CORRECT ANSWER
the energy change when a substance changes from liquid phase to gas phase
RATIONALE
The enthalpy of vaporization (ΔHvap) quantifies the energy required to overcome intermolecular forces during the phase transition
from liquid to gas, reflecting the strength of these interactions. Understanding ΔHvap is critical for predicting vapor pressure and
boiling points in thermodynamic processes.
Q6 QUESTION 6 OF 70
Which of the following will have the strongest dipole-dipole attraction? CCl4, NCl3, BCl3, Cl2
CORRECT ANSWER
NCl3
Page 3
