krit.club logo

Solutions

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Types of solutions

Subtopic

Types of solutions under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Identify the type of solution represented by 'Label D' in the classification flowchart below.

    A.

    Gas in Liquid

    B.

    Liquid in Gas

    C.

    Solid in Gas

    D.

    Gas in Solid

  2. 2.

    In 'Tincture of Iodine', which is used as an antiseptic, identify the solute and the solvent.

    A.

    Alcohol is the solute and Iodine is the solvent

    B.

    Iodine is the solute and Alcohol is the solvent

    C.

    Water is the solute and Iodine is the solvent

    D.

    Iodine is the solute and Water is the solvent

  3. 3.

    An alloy, such as Bronze (a mixture of copper and tin), is classified as which type of solution?

    A.

    Solid in liquid

    B.

    Liquid in solid

    C.

    Solid in solid

    D.

    Gas in solid

Download the worksheet for Solutions - Types of solutions to practice offline. It includes additional chapter-level practice questions.

Solubility of gases in liquids

Subtopic

Solubility of gases in liquids under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The Henry's law constant (KHK_H) for a gas depends on which of the following factors?

    A.

    The nature of the gas only

    B.

    The temperature only

    C.

    The nature of the solvent and the gas only

    D.

    The nature of the gas, nature of the solvent, and the temperature

  2. 2.

    Why are soft drink bottles sealed under high pressure?

    A.

    To increase the boiling point of the liquid

    B.

    To decrease the KHK_H value of the gas

    C.

    To increase the solubility of CO2CO_2 in the drink

    D.

    To prevent the liquid from evaporating

  3. 3.

    According to Henry's Law, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas present above the surface of the liquid. Which mathematical expression represents this?

    A.

    P=KH⋅χP = K_H \cdot \chi

    B.

    KH=P⋅χK_H = P \cdot \chi

    C.

    χ=KH⋅P2\chi = K_H \cdot P^2

    D.

    P=KH/χP = K_H / \chi

Download the worksheet for Solutions - Solubility of gases in liquids to practice offline. It includes additional chapter-level practice questions.

Raoult's Law

Subtopic

Raoult's Law under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The relative lowering of vapor pressure for a solution containing a non-volatile solute is equal to:

    A.

    Mole fraction of the solvent

    B.

    Mole fraction of the solute

    C.

    Molarity of the solution

    D.

    Mass fraction of the solute

  2. 2.

    Which of the following pairs is most likely to form a solution that obeys Raoult's Law over the entire range of concentration?

    A.

    Water and Ethanol

    B.

    Chloroform and Acetone

    C.

    n-Hexane and n-Heptane

    D.

    Nitric acid and Water

  3. 3.

    For a binary solution of two volatile liquids A and B to be considered 'Ideal', which of the following thermodynamic conditions must be satisfied?

    A.

    ΔHmix=0\Delta H_{mix} = 0 and ΔVmix=0\Delta V_{mix} = 0

    B.

    ΔHmix>0\Delta H_{mix} > 0 and ΔVmix>0\Delta V_{mix} > 0

    C.

    ΔHmix<0\Delta H_{mix} < 0 and ΔVmix<0\Delta V_{mix} < 0

    D.

    ΔSmix=0\Delta S_{mix} = 0 and ΔGmix=0\Delta G_{mix} = 0

Download the worksheet for Solutions - Raoult's Law to practice offline. It includes additional chapter-level practice questions.

Ideal and non-ideal solutions

Subtopic

Ideal and non-ideal solutions under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When two liquids AA and BB form an ideal solution, the volume of the resulting solution is:

    A.

    Greater than the sum of the volumes of AA and BB

    B.

    Less than the sum of the volumes of AA and BB

    C.

    Equal to the sum of the volumes of AA and BB

    D.

    Zero

  2. 2.

    For an ideal solution, what is the value of the enthalpy of mixing, ΔHmix\Delta H_{mix}?

    A.

    ΔHmix>0\Delta H_{mix} > 0

    B.

    ΔHmix<0\Delta H_{mix} < 0

    C.

    ΔHmix=0\Delta H_{mix} = 0

    D.

    ΔHmix=∞\Delta H_{mix} = \infty

  3. 3.

    Which of the following pairs of liquids is most likely to form an ideal solution?

    A.

    Ethanol and Acetone

    B.

    Benzene and Toluene

    C.

    Chloroform and Acetone

    D.

    Water and Nitric acid

Download the worksheet for Solutions - Ideal and non-ideal solutions to practice offline. It includes additional chapter-level practice questions.

Colligative properties

Subtopic

Colligative properties under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is NOT a colligative property?

    A.

    Osmotic pressure

    B.

    Elevation of boiling point

    C.

    Depression of freezing point

    D.

    Vapor pressure

  2. 2.

    When a non-volatile solute is dissolved in a pure solvent, the vapor pressure of the resulting solution:

    A.

    Increases

    B.

    Decreases

    C.

    Remains the same

    D.

    Initially increases then decreases

  3. 3.

    What is the unit of the molal elevation constant (KbK_b)?

    A.

    K kg mol−1K\ kg\ mol^{-1}

    B.

    mol kg K−1mol\ kg\ K^{-1}

    C.

    K−1 kg molK^{-1}\ kg\ mol

    D.

    kg mol K−1kg\ mol\ K^{-1}

Download the worksheet for Solutions - Colligative properties to practice offline. It includes additional chapter-level practice questions.

Osmotic pressure

Subtopic

Osmotic pressure under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Two solutions are said to be 'Isotonic' when they have the same:

    A.

    Molarity and Molality

    B.

    Freezing point and Boiling point

    C.

    Osmotic pressure at a given temperature

    D.

    Vapor pressure and Surface tension

  2. 2.

    During the process of osmosis, in which direction do the solvent molecules move through a semi-permeable membrane (SPM)?

    A.

    From a region of higher solute concentration to lower solute concentration.

    B.

    From the solution to the pure solvent.

    C.

    From a region of lower solvent chemical potential to higher solvent chemical potential.

    D.

    From a region of lower solute concentration to higher solute concentration.

  3. 3.

    According to the van't Hoff equation for dilute solutions, what is the mathematical relationship between osmotic pressure (pi\\pi), molar concentration (CC), and absolute temperature (TT)?

    A.

    pi=fracCRTV\\pi = \\frac{CRT}{V}

    B.

    pi=fracCRT\\pi = \\frac{C}{RT}

    C.

    pi=CRT\\pi = CRT

    D.

    pi=fracRTC\\pi = \\frac{RT}{C}

Download the worksheet for Solutions - Osmotic pressure to practice offline. It includes additional chapter-level practice questions.

Abnormal molecular mass

Subtopic

Abnormal molecular mass under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the expected value of the Van't Hoff factor (ii) for Potassium Sulfate (K2SO4K_2SO_4) in an aqueous solution, assuming complete dissociation?

    A.

    1

    B.

    2

    C.

    3

    D.

    4

  2. 2.

    For a non-electrolyte solute like Glucose or Urea in water, which of the following statements regarding the Van't Hoff factor (ii) is true?

    A.

    i>1i > 1

    B.

    i<1i < 1

    C.

    i=1i = 1

    D.

    i=0i = 0

  3. 3.

    When a solute undergoes association in a specific solvent, how does the observed molecular mass compare to the theoretical (normal) molecular mass?

    A.

    The observed molecular mass is higher than the normal molecular mass.

    B.

    The observed molecular mass is lower than the normal molecular mass.

    C.

    The observed molecular mass remains equal to the normal molecular mass.

    D.

    The observed molecular mass becomes zero.

Download the worksheet for Solutions - Abnormal molecular mass to practice offline. It includes additional chapter-level practice questions.

Van't Hoff factor

Subtopic

Van't Hoff factor under Solutions for Grade 12 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When acetic acid is dissolved in benzene, it undergoes dimerization. In this case, the Van't Hoff factor (ii) is:

    A.

    i<1i < 1

    B.

    i>1i > 1

    C.

    i=1i = 1

    D.

    i=0i = 0

  2. 2.

    Which of the following 0.1 M0.1\,M aqueous solutions will exhibit the maximum depression in freezing point?

    A.

    NaClNaCl

    B.

    C6H12O6C_{6}H_{12}O_{6}

    C.

    Al2(SO4)3Al_{2}(SO_{4})_{3}

    D.

    K2SO4K_{2}SO_{4}

  3. 3.

    If a salt of the type AB2AB_{2} dissociates completely in an aqueous solution, what is the value of its Van't Hoff factor (ii)?

    A.

    1

    B.

    2

    C.

    3

    D.

    4

Download the worksheet for Solutions - Van't Hoff factor to practice offline. It includes additional chapter-level practice questions.

Solutions - ICSE Class 12 Chemistry Notes & Revision | Krit.club