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SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 3 - Ionic Equilibria [Latest edition]

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12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com
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Chapter 3: Ionic Equilibria

Multiple choice questionsVery short answer questionsShort answer questions (Type- I)Short answer questions (Type- II)Long answer questions
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Multiple choice questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 3 Ionic Equilibria Multiple choice questions

1 Mark

Multiple choice questions | Q 1

What is the percentage dissociation of 0.1 M solution of acetic acid? [Ka(CH3COOH) = 10–5]

  • 0.01%

  • 1%

  • 10%

  • 100%

Multiple choice questions | Q 2

For a reaction \[\ce{HCl_{(aq)} + H2O_{(l)} ⇌ H3O^+_{ (aq)} + Cl^-_{ (aq)}}\]

Which of the following is a conjugate acid-base pair?

  • HCl and H2O

  • H3O+

  • H3O+ and H2O

  • HCl and H3O+

Multiple choice questions | Q 3

In biochemical system, pH of blood in our body is maintained due to the following buffer:

  • NH4OH + NH4Cl

  • \[\ce{HCO^-_3 + H2CO3}\]

  • CH3COOH + CH3COONa

  • citric acid + Mg(OH)2

Multiple choice questions | Q 4

If ‘IP’ is the ionic product and ‘Ksp’ is the solubility product, precipitation of the compound will occur under the condition when:

  • IP = Ksp

  • IP > Ksp

  • IP < Ksp

  • IP < < Ksp

Multiple choice questions | Q 5

NH4F is a salt of weak acid HF (Ka = 7.2 × 10–4) and weak base NH4OH (Kb = 1.8 × 10–5), the solution of NH4F will be ______.

  • slightly acidic

  • slightly basic

  • strongly basic

  • neutral

Multiple choice questions | Q 6

The theory which explain amphoteric nature of water is ______.

  • Arrhenius theory

  • Lewis theory

  • Ostwald theory

  • Bronsted-Lowry theory

Multiple choice questions | Q 7

The pKb of weak base BOH [Kb(BOH) = 1 × 10-5] will be ______.

  • -5

  • 5

  • 1

  • 10-5

Very short answer questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 3 Ionic Equilibria Very short answer questions

1 Mark

Very short answer questions | Q 1

Name the buffer which is used to maintained pH of 8 to 10 for precipitation of cations III A group in qualitative analysis.

Very short answer questions | Q 2

Write the solubility product of sparingly soluble salt Bi2S3.

Very short answer questions | Q 3

What is the pOH if the hydrogen ion concentration in solution is 1 × 10–3 mol dm–3?

Very short answer questions | Q 4

Write the relationship between molar solubility (S) and solubility product (Ksp) for CaF2.

Very short answer questions | Q 5

Give any one example of salt derived from weak acid and weak base.

Very short answer questions | Q 6

Write the formula to calculate pH of buffer solution.

Very short answer questions | Q 7

Label the one conjugate acid-base pair in the following reaction.

\[\ce{CO^{2-}_{3(aq)} + H2O_{(l)} ⇌ OH^- + HCO^-_3}\]

Very short answer questions | Q 8

Calculate the pOH of 10-8 M of HCl.

Short answer questions (Type- I)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 3 Ionic Equilibria Short answer questions (Type- I)

2 Marks

Short answer questions (Type- I) | Q 1

Calculate the pH and pOH of 0.0001 M HCl solution.

Short answer questions (Type- I) | Q 2

The solubility product of BaCl2 is 4.0 × 10-8. What will be its molar solubility in mol dm-3?

Short answer questions (Type- I) | Q 3

Classify the following species into Lewis acids and Lewis bases.

Cl-  
`"NH"_4^+`  
BCl3  
NH3  
Short answer questions (Type- I) | Q 4.1

Define pH.

Short answer questions (Type- I) | Q 4.2

Define pOH.

Short answer questions (Type- I) | Q 5

Define molar solubility. Write it’s unit.

Short answer questions (Type- I) | Q 6.1

Write solubility product of following sparingly soluble salt.

BaSO4

Short answer questions (Type- I) | Q 6.2

Write solubility product of following sparingly soluble salt.

CaF2

Short answer questions (Type- II)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 3 Ionic Equilibria Short answer questions (Type- II)

3 Marks

Short answer questions (Type- II) | Q 1

Define buffer solution.

Short answer questions (Type- II) | Q 1

Explain the types of buffer solutions.

Short answer questions (Type- II) | Q 2.1

Write one application of the following buffer:

Citrate buffer

Short answer questions (Type- II) | Q 2.2

Write one application of the following buffer:

`"HCO"_3^-  + "H"_2"CO"_3`

Short answer questions (Type- II) | Q 2.3

Write one application of the following buffer:

NH4OH + NH4Cl

Short answer questions (Type- II) | Q 3

Derive the equation which implies that the degree of dissociation of weak acid is inversely proportional to the square root of its concentration.

Short answer questions (Type- II) | Q 4

A buffer solution contains 0.3 mol dm–3 NH4OH (Kb = 1.8 × 10–5) and 0.4 mol dm–3 NH4Cl. Calculate pOH of the solution.

Short answer questions (Type- II) | Q 5

The solubility of AgBr in water is 1.20 × 10–5 mol dm–3. Calculate the solubility product of AgBr.

Long answer questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 3 Ionic Equilibria Long answer questions

4 Marks

Long answer questions | Q 1

Derive the equation pH + pOH = 14.

Long answer questions | Q 1

Distinguish between strong electrolyte and weak electrolyte.

Long answer questions | Q 2

If ‘S’ is solubility in mol dm–3 and Ksp is the solubility product, then write the relation between them for CaF2 and BaSO4. Calculate the concentration of H3O+ ion in soft drink whose pH is 3.5.

Long answer questions | Q 3

Explain the amphoteric nature of water.

Long answer questions | Q 3

Define Solubility product.

Long answer questions | Q 3

Define Hydrolysis of salt.

Chapter 3: Ionic Equilibria

Multiple choice questionsVery short answer questionsShort answer questions (Type- I)Short answer questions (Type- II)Long answer questions
12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 3 - Ionic Equilibria

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 3 (Ionic Equilibria) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board 12th Standard HSC Chemistry Maharashtra State Board 2021 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 3 Ionic Equilibria are Ionic Equilibria, Types of Electrolyte, Acids and Bases, Ionisation of Acids and Bases, Autoionization of Water, The pH Scale, Hydrolysis of Salts, Buffer Solutions, Solubility product, Common Ion Effect.

Using SCERT Maharashtra Question Bank 12th Board Exam solutions Ionic Equilibria exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in SCERT Maharashtra Question Bank Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer SCERT Maharashtra Question Bank Textbook Solutions to score more in exam.

Get the free view of chapter 3 Ionic Equilibria 12th Board Exam extra questions for 12th Standard HSC Chemistry Maharashtra State Board 2021 and can use Shaalaa.com to keep it handy for your exam preparation

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