GENERAL CHEMISTRY 2 ACS FINAL EXAM LATEST
2026/2027 || VERIFIED QUESTIONS & ANSWERS || HIGH-
YIELD CHEMISTRY REVIEW || COMPLETE STUDY GUIDE ||
GRADED A+
How to determine the rate of gases escaping a hole in a balloon?
as density increases effusion decreases, density=m/v so the molecule with the
highest density will have gas escape the slowest while the molecule with the
lowest density will have gas escape the fastest
What is an assumption made in the kinetic molecular theory of gases?
gas molecules move constantly and randomly throughout the space they occupy
On the graph of fraction of moles on the Y axis and speed on the X axis which
curve represents the lightest gas, and which curve represents the heaviest gas?
the lightest gas is the flattest curve (d) the heaviest gas is the gas that peaks the
highest (a)
What is the volume of gas directly proportional to?
the number of particles in a gas
What is the volume of gas inversely proportional to?
the pressure of the gas
.... is how gases spread among each other; ... is how gases escape through a hole
in a container?
diffusion, effusion
Which of the following statements aligns with the kinetic molecular theory of
gases?
energy can be transferred but not lost as gas particles collide with each other
and the container walls
In a sample of air at a given temperature...
the nitrogen and oxygen molecules have the same average kinetic energy
An endothermic process is best described as an energy transfer to the ... from
the ...
system from the surroundings
,An exothermic process is best described as an energy transfer to the ... from the
...
surroundings from the system
When solid sodium hydroxide pellets are dissolved in water, the temperature of
the water and beaker rises. The formation of an aqueous solution of sodium
hydroxide is
an exothermic process
The part of a heating curve representing a phase change is horizontal. What
does this indicate?
the energy being added is being used to overcome intermolecular forces
A balanced reaction equation with a ΔH value is called?
a thermochemical equation
Select which species has a standard enthalpy formation of zero?
H2 (g) because it is a pure element in its standard state
In the course of a chemical reaction bonds must be broken before new bonds
can be formed. Which statement is true about the bond breaking process?
breaking bonds is an endothermic process that requires an input of energy
Perfect crystals of carbon monoxide should align. However perfect crystals are
difficult to prepare because the very small dipole moment allows a few
molecules to align in a pattern like CO OC CO instead of CO CO CO. If CO
OC CO crystals were cooled to 0K what would be the value of their absolute
entropy
>0
During which of the following processes does the entropy of the system
decrease?
iron and oxygen gas react to form rust
Processes are always spontaneous when
ΔH < 0 and ΔS > 0
Processes are non-spontaneous when...
ΔH > 0 and ΔS < 0
, The dissolution of ammonium nitrate in water is a spontaneous endothermic
process. It is spontaneous because the system undergoes...
an increase in entropy (ΔS >0)
Which statement below regarding the determination of reaction rates is true?
reaction rates can be measured by monitering how much product is generated or
how much reactant is consumed in a given amount of time
The initial rate of a chemical reaction depends on which factors?
concentration of reactants, and temperature
For the rate law; Rate=k[A]1/2[B] the partial order with respect to A is ... the
partial order with respect to B is ... and the total order is ....
A = 1/2, B=1, and the total order is 1.5
A proposed mechanism for the decomposition of ozone in the atmosphere is:
Step 1: Cl + O3 --> ClO + O2
Step 2: ClO + O3 --> Cl + 2O2
In order, which of the following species is an intermediate and which is a
catalyst?
intermediate: ClO, catalyst: Cl
What does it mean if K>1?
it favors the products
What does it mean if K<1?
it favors the reactants
If Q for a reaction is less than K which direction will the reaction proceed?
forward favoring the products
If Q for a reaction is greater than K which direction will the reaction proceed?
reverse favoring the reactants
What two types of species are typically not included in equilibrium
expressions?
pure liquids and pure solids
What happens if you increase the total pressure of the system?
it shifts to products
2026/2027 || VERIFIED QUESTIONS & ANSWERS || HIGH-
YIELD CHEMISTRY REVIEW || COMPLETE STUDY GUIDE ||
GRADED A+
How to determine the rate of gases escaping a hole in a balloon?
as density increases effusion decreases, density=m/v so the molecule with the
highest density will have gas escape the slowest while the molecule with the
lowest density will have gas escape the fastest
What is an assumption made in the kinetic molecular theory of gases?
gas molecules move constantly and randomly throughout the space they occupy
On the graph of fraction of moles on the Y axis and speed on the X axis which
curve represents the lightest gas, and which curve represents the heaviest gas?
the lightest gas is the flattest curve (d) the heaviest gas is the gas that peaks the
highest (a)
What is the volume of gas directly proportional to?
the number of particles in a gas
What is the volume of gas inversely proportional to?
the pressure of the gas
.... is how gases spread among each other; ... is how gases escape through a hole
in a container?
diffusion, effusion
Which of the following statements aligns with the kinetic molecular theory of
gases?
energy can be transferred but not lost as gas particles collide with each other
and the container walls
In a sample of air at a given temperature...
the nitrogen and oxygen molecules have the same average kinetic energy
An endothermic process is best described as an energy transfer to the ... from
the ...
system from the surroundings
,An exothermic process is best described as an energy transfer to the ... from the
...
surroundings from the system
When solid sodium hydroxide pellets are dissolved in water, the temperature of
the water and beaker rises. The formation of an aqueous solution of sodium
hydroxide is
an exothermic process
The part of a heating curve representing a phase change is horizontal. What
does this indicate?
the energy being added is being used to overcome intermolecular forces
A balanced reaction equation with a ΔH value is called?
a thermochemical equation
Select which species has a standard enthalpy formation of zero?
H2 (g) because it is a pure element in its standard state
In the course of a chemical reaction bonds must be broken before new bonds
can be formed. Which statement is true about the bond breaking process?
breaking bonds is an endothermic process that requires an input of energy
Perfect crystals of carbon monoxide should align. However perfect crystals are
difficult to prepare because the very small dipole moment allows a few
molecules to align in a pattern like CO OC CO instead of CO CO CO. If CO
OC CO crystals were cooled to 0K what would be the value of their absolute
entropy
>0
During which of the following processes does the entropy of the system
decrease?
iron and oxygen gas react to form rust
Processes are always spontaneous when
ΔH < 0 and ΔS > 0
Processes are non-spontaneous when...
ΔH > 0 and ΔS < 0
, The dissolution of ammonium nitrate in water is a spontaneous endothermic
process. It is spontaneous because the system undergoes...
an increase in entropy (ΔS >0)
Which statement below regarding the determination of reaction rates is true?
reaction rates can be measured by monitering how much product is generated or
how much reactant is consumed in a given amount of time
The initial rate of a chemical reaction depends on which factors?
concentration of reactants, and temperature
For the rate law; Rate=k[A]1/2[B] the partial order with respect to A is ... the
partial order with respect to B is ... and the total order is ....
A = 1/2, B=1, and the total order is 1.5
A proposed mechanism for the decomposition of ozone in the atmosphere is:
Step 1: Cl + O3 --> ClO + O2
Step 2: ClO + O3 --> Cl + 2O2
In order, which of the following species is an intermediate and which is a
catalyst?
intermediate: ClO, catalyst: Cl
What does it mean if K>1?
it favors the products
What does it mean if K<1?
it favors the reactants
If Q for a reaction is less than K which direction will the reaction proceed?
forward favoring the products
If Q for a reaction is greater than K which direction will the reaction proceed?
reverse favoring the reactants
What two types of species are typically not included in equilibrium
expressions?
pure liquids and pure solids
What happens if you increase the total pressure of the system?
it shifts to products
