Start learning →

CG PET Ideal Solutions — practice questions — page 4

Explore 121 free Ideal Solutions questions in CG PET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Ideal Solutions with Quill →

Ideal Solutions questions and exercises with answers

Showing questions 91–120 of 121.

Two volatile liquids A (P°_A = 100) and B (P°_B = 200) form ideal solution. For x_A = 0.4, total vapor pressure:Read the answer and worked solution →Osmotic pressure of 0.01 M sucrose solution at 27°C (R = 0.0821 L atm/mol K):Read the answer and worked solution →For solution of urea (M_w = 60 g/mol) with 6 g in 100 g water, molality:Read the answer and worked solution →For 0.1 M acetic acid (Ka = 1.8 × 10⁻⁵), van't Hoff factor i is:Read the answer and worked solution →For salt CaCl₂ (assume full dissociation), i =Read the answer and worked solution →For a 1 m glucose aqueous solution (i = 1), boiling point:Read the answer and worked solution →Freezing-point depression and elevation are colligative properties: depend on:Read the answer and worked solution →Match each scientist to their contributionRead the answer and worked solution →Ionic or covalent?Read the answer and worked solution →Complete the driver of bond formationRead the answer and worked solution →Single, double and triple bondsRead the answer and worked solution →True or false: Lewis structuresRead the answer and worked solution →Complete the definition of resonanceRead the answer and worked solution →Tap every bond parameter the chapter namesRead the answer and worked solution →True or false: ionic solidsRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Bonded pair or lone pair?Read the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why resonance is neededRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: what bond parameters affectRead the answer and worked solution →Bond parameters in useRead the answer and worked solution →Which parameter answers this?Read the answer and worked solution →True or false: resonanceRead the answer and worked solution →Order the steps: draw a Lewis structureRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: structureRead the answer and worked solution →

Worked practice questions

Two volatile liquids A (P°_A = 100) and B (P°_B = 200) form ideal solution. For x_A = 0.4, total vapor pressure:

  1. 150
  2. 100
  3. 160 (= 100 × 0.4 + 200 × 0.6)
  4. 300
Show answer and solution

Correct answer: C. 160 (= 100 × 0.4 + 200 × 0.6)

P_total = P°_A x_A + P°_B x_B = 100 × 0.4 + 200 × 0.6 = 40 + 120 = 160 mmHg. (Linear in composition for ideal mixtures.)

Open this question →

Osmotic pressure of 0.01 M sucrose solution at 27°C (R = 0.0821 L atm/mol K):

  1. 1 atm
  2. 0.246 atm (= 0.01 × 0.0821 × 300)
  3. 2.46 atm
  4. 0.0821 atm
Show answer and solution

Correct answer: B. 0.246 atm (= 0.01 × 0.0821 × 300)

π = MRT = 0.01 × 0.0821 × 300 = 0.246 atm. (Even dilute solutions can have substantial osmotic pressures, hence important for cells: isotonic saline ≈ 0.9% NaCl.)

Open this question →

For solution of urea (M_w = 60 g/mol) with 6 g in 100 g water, molality:

  1. 1 m
  2. 6 m
  3. 1 m (= 6/60 / 0.1 kg water)
  4. 0.1 m
Show answer and solution

Correct answer: C. 1 m (= 6/60 / 0.1 kg water)

Moles urea = 6/60 = 0.1 mol. Kg water = 0.1. Molality = 0.1/0.1 = 1 mol/kg. ΔT_f = 1.86 × 1 = 1.86 K (freezing pt = -1.86°C).

Open this question →

How to practise

  1. Choose a Ideal Solutions question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

Ideal and Non-Ideal SolutionsNon-Ideal SolutionsReactions in Aqueous SolutionElectrochemistryElectrochemical SeriesCoordination CompoundsSolutionsSurface Chemistry