Question 1

Which type of intermolecular force is the dominant force when oxygen is dissolved in water?

Accepted Answer

Oxygen (O2) is a nonpolar molecule, and water (H2O) is a polar molecule. When oxygen dissolves in water, the dominant intermolecular force is the dipole-induced dipole interaction. This occurs because the polar water molecules can induce a temporary dipole in the oxygen molecules.

Question 2

Which type of intermolecular force is the dominant force in a CH₃CH₂OH molecule?

Accepted Answer

Hydrogen bonding is the dominant intermolecular force in molecules that contain a hydrogen atom bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine). In the given molecule, the presence of an -OH (hydroxyl) group indicates that hydrogen bonding can occur, as the hydrogen is directly bonded to oxygen, a highly electronegative atom.

Question 3

A blood cell is placed in a hypotonic solution. What will happen to the size of the cell in the hypotonic solution?

Accepted Answer

In a hypotonic solution, water moves into the cell due to osmosis, causing the cell to swell.

Question 4

Which of the following molecules has the highest boiling point?

Accepted Answer

HF has the highest boiling point among the options given due to hydrogen bonding, which is a strong type of intermolecular force. HF molecules can form hydrogen bonds with each other, leading to a higher boiling point compared to HCl, HBr, and HI, which rely on weaker dipole-dipole interactions and London dispersion forces.

Question 5

Which of the following bonds has the largest dipole?

Accepted Answer

HF has the largest dipole moment because the difference in electronegativity between hydrogen and fluorine is the greatest among the options listed, leading to a more polar bond.

Question 6

Which of the following molecules has the highest polarizability?

Accepted Answer

Polarizability increases with the size of the atom or molecule. Among the given options, iodine (I) is the largest atom, making the molecule containing iodine (D) the most polarizable.

Question 7

Which of the following has the highest melting point?

Accepted Answer

Kr (Krypton) has the highest melting point among the given options because as the atomic number increases in noble gases, the atomic mass and the van der Waals forces between the atoms also increase, leading to a higher melting point.

Question 8

Complete the following sentence: Decreasing the surface area of a solid will result in the dissolution process being _______.

Accepted Answer

The answer of Complete the following sentence: Decreasing the surface...

Question 9

Which of the following compounds will cause the greatest change in the freezing point of a liquid, assuming that an equal number of molecules are added to each solution?

Accepted Answer

Mg(ClO₃)₂ dissociates into three ions (Mg²⁺ and 2 ClO₃^-), causing the greatest change in freezing point due to the highest van't Hoff factor.

Question 10

In aqueous solution, a sodium ion is attracted to which atom in the water molecule?

Accepted Answer

The oxygen atom in a water molecule carries a partial negative charge due to its higher electronegativity compared to hydrogen, making it attractive to positively charged ions like sodium.

Question 11

Complete the following sentence: For most compounds, as the temperature decreases, the solubility _______.

Accepted Answer

The answer of Complete the following sentence: For most compounds,...

Question 12

Calculate the surface area of a sphere with a volume of 1.5 cm³, given the formulas for a sphere: volume = 4/3πr³ and surface area = 4πr².

Accepted Answer

First, solve for the radius (r) using the volume formula: $1.5 = \frac{4}{3}\pi r^3$. Solving for $r^3$ gives $r^3 = \frac{1.5 \times 3}{4\pi}$. Calculating $r^3$ and then finding $r$, we can substitute $r$ into the surface area formula: $4\pi r^2$. The correct calculation leads to a surface area of approximately $6.3 \, \text{cm}^2$, making option C correct.

Question 13

Which of the following is not a colligative property?

Accepted Answer

Freezing point elevation is not a colligative property; it is actually freezing point depression that is a colligative property. Colligative properties depend on the number of solute particles, not their identity.

Question 14

Which of the following molecules has the lowest boiling point?

Accepted Answer

CH4 has the lowest boiling point among the options given due to its smaller molecular size and weaker London dispersion forces compared to the other molecules listed, which are all larger and thus have stronger intermolecular forces.

Question 15

Which type of intermolecular force is the strongest force?

Accepted Answer

Hydrogen bonds are the strongest type of intermolecular force among the options listed. They occur when a hydrogen atom covalently bonded to a highly electronegative atom (such as nitrogen, oxygen, or fluorine) is attracted to another electronegative atom in a different molecule.

Question 16

Which type of intermolecular force is acting in an H₂O molecule?

Accepted Answer

Hydrogen bonding is a type of dipole-dipole interaction that occurs between molecules that have a hydrogen atom bonded to a highly electronegative atom, such as oxygen, nitrogen, or fluorine. In the case of H₂O, the hydrogen atoms are bonded to oxygen atoms, which are highly electronegative. This creates a dipole moment in the molecule, with the oxygen atoms having a partial negative charge and the hydrogen atoms having a partial positive charge. The dipole-dipole interactions between the H₂O molecules are strong enough to hold them together in a liquid state at room temperature.

Question 17

Which of the following molecules will form hydrogen bonds?

Accepted Answer

Hydrogen bonding typically occurs in molecules where hydrogen is directly bonded to a highly electronegative atom such as nitrogen, oxygen, or fluorine. In the given options, only D (NH3) has hydrogen bonded to nitrogen, which allows it to form hydrogen bonds.

Question 18

Which type of intermolecular force is acting in Ne(g)?

Accepted Answer

Dispersion forces are the only intermolecular forces acting in Ne(g) because Ne is a nonpolar molecule.

Question 19

Which type of intermolecular force is acting in a N₂ molecule?

Accepted Answer

Dispersion forces are the only intermolecular forces acting in a N2 molecule.

Question 20

Which of these molecules has the strongest intermolecular forces?

Accepted Answer

Water (H₂O) has the strongest intermolecular forces due to hydrogen bonding, which is stronger than the dipole-dipole interactions present in H₂S, H₂Se, and H₂Te.

Quiz 7: Properties of Solutions Ii: Intermolecular Forces and Colligative Properties

Which type of intermolecular force is the dominant force when oxygen is dissolved in water?

Which type of intermolecular force is the dominant force in a CH₃CH₂OH molecule?

A blood cell is placed in a hypotonic solution. What will happen to the size of the cell in the hypotonic solution?

Which of the following molecules has the highest boiling point?

Which of the following bonds has the largest dipole?

Which of the following molecules has the highest polarizability?

Which of the following has the highest melting point?

Complete the following sentence: Decreasing the surface area of a solid will result in the dissolution process being _______.

Which of the following compounds will cause the greatest change in the freezing point of a liquid, assuming that an equal number of molecules are added to each solution?

In aqueous solution, a sodium ion is attracted to which atom in the water molecule?

Complete the following sentence: For most compounds, as the temperature decreases, the solubility _______.

Calculate the surface area of a sphere with a volume of 1.5 cm³, given the formulas for a sphere: volume = 4/3πr³ and surface area = 4πr².

Which of the following is not a colligative property?

Which of the following molecules has the lowest boiling point?

Which type of intermolecular force is the strongest force?

Which type of intermolecular force is acting in an H₂O molecule?

Which of the following molecules will form hydrogen bonds?

Which type of intermolecular force is acting in Ne(g) ?

Which type of intermolecular force is acting in a N₂ molecule?

Which of these molecules has the strongest intermolecular forces?

Quiz 7: Properties of Solutions Ii: Intermolecular Forces and Colligative Properties

Which type of intermolecular force is the dominant force when oxygen is dissolved in water?

Which type of intermolecular force is the dominant force in a CH3CH2OH molecule?

A blood cell is placed in a hypotonic solution. What will happen to the size of the cell in the hypotonic solution?

Which of the following molecules has the highest boiling point?

Which of the following bonds has the largest dipole?

Which of the following molecules has the highest polarizability?

Which of the following has the highest melting point?

Complete the following sentence: Decreasing the surface area of a solid will result in the dissolution process being _______.

Which of the following compounds will cause the greatest change in the freezing point of a liquid, assuming that an equal number of molecules are added to each solution?

In aqueous solution, a sodium ion is attracted to which atom in the water molecule?

Complete the following sentence: For most compounds, as the temperature decreases, the solubility _______.

Calculate the surface area of a sphere with a volume of 1.5 cm3, given the formulas for a sphere: volume = 4/3πr3 and surface area = 4πr2.

Which of the following is not a colligative property?

Which of the following molecules has the lowest boiling point?

Which type of intermolecular force is the strongest force?

Which type of intermolecular force is acting in an H2O molecule?

Which of the following molecules will form hydrogen bonds?

Which type of intermolecular force is acting in Ne(g) ?

Which type of intermolecular force is acting in a N2 molecule?

Which of these molecules has the strongest intermolecular forces?

Which type of intermolecular force is the dominant force in a CH₃CH₂OH molecule?

Calculate the surface area of a sphere with a volume of 1.5 cm³, given the formulas for a sphere: volume = 4/3πr³ and surface area = 4πr².

Which type of intermolecular force is acting in an H₂O molecule?

Which type of intermolecular force is acting in a N₂ molecule?