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Indian Navy INET Equilibrium — practice questions

Explore 6 free Equilibrium questions in Indian Navy INET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Equilibrium questions and exercises with answers

Showing questions 1–6 of 6.

At 298 K, water has Kw = 10⁻¹⁴. Concentration of H+ in pure water:Read the answer and worked solution →As per your syllabus, equilibrium in a physical or chemical process is best described as which kind?Read the answer and worked solution →As per your syllabus, what is the conjugate base of the Brønsted acid HSO₄⁻?Read the answer and worked solution →As per your syllabus, the conjugate base of a STRONG acid is necessarily which kind of base?Read the answer and worked solution →As per your syllabus, addition of CH₃COONa to a solution of CH₃COOH does what to the degree of ionisation of acetic acid?Read the answer and worked solution →As per your syllabus, on DILUTING a buffer solution, what happens to the buffer pH (to first approximation)?Read the answer and worked solution →

Worked practice questions

At 298 K, water has Kw = 10⁻¹⁴. Concentration of H+ in pure water:

  1. 10⁻¹⁴ M
  2. 10⁻⁷ M
  3. 10⁻¹ M
  4. Variable
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Correct answer: B. 10⁻⁷ M

In pure water at 25°C: H2O ⇌ H+ + OH-, Kw = [H+][OH-] = 10⁻¹⁴. Since [H+] = [OH-] in pure water: [H+]² = 10⁻¹⁴, [H+] = 10⁻⁷ M. Hence neutral pH = 7.

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As per your syllabus, equilibrium in a physical or chemical process is best described as which kind?

  1. Static
  2. Dynamic
  3. Frozen
  4. One-directional
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Correct answer: B. Dynamic

Your syllabus: equilibrium is dynamic — forward and reverse rates equal, not zero. Confirmed by radioactive-sugar + deuterium-ammonia experiments.

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As per your syllabus, what is the conjugate base of the Brønsted acid HSO₄⁻?

  1. SO₄²⁻
  2. H₂SO₄
  3. H₃O⁺
  4. OH⁻
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Correct answer: A. SO₄²⁻

syllabus Problem 6.14: conjugate base has one less proton. HSO₄⁻ − H⁺ → SO₄²⁻.

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More Chemistry topics

JEE Main 2023 MixedAtomic combinationsStructure of AtomAtoms and ElementsChemical EquilibriumClass9 Atom StructureChemistryAlkenes