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Indian Navy 10+2 B.Tech Cadet Equilibrium Constant — practice questions

Explore 32 free Equilibrium Constant questions in Indian Navy 10+2 B.Tech Cadet Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Equilibrium Constant questions and exercises with answers

Showing questions 1–30 of 32.

Le Chatelier's principle states that a system at equilibrium responds to a stress by:Read the answer and worked solution →pOH of a solution with pH = 8.5 (at 25°C):Read the answer and worked solution →In a saturated solution of AgCl, [Ag+] = 1.26 × 10⁻⁵. If KNO3 is added (no common ion), solubility of AgCl:Read the answer and worked solution →As per your syllabus, given [N₂] = 1.5×10⁻² M, [H₂] = 3.0×10⁻² M, [NH₃] = 1.2×10⁻² M at 500 K, what is Kc for N₂ + 3H₂ ⇌ 2NH₃?Read the answer and worked solution →As per your syllabus, if Kc > 10³, what does this magnitude indicate about the reaction at equilibrium?Read the answer and worked solution →As per your syllabus, given ΔG° = 13.8 kJ/mol at 298 K for glucose phosphorylation, the value of Kc is closest to which?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 →A BUFFER solution is best described as: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 →

Worked practice questions

Le Chatelier's principle states that a system at equilibrium responds to a stress by:

  1. Doing nothing
  2. Always going backward
  3. Always going forward
  4. Shifting in a direction that partially offsets the stress
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Correct answer: D. Shifting in a direction that partially offsets the stress

The system shifts in a direction that partially counteracts (offsets) the change applied. Applies to temperature, pressure, concentration changes.

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pOH of a solution with pH = 8.5 (at 25°C):

  1. 9.5
  2. 8.5
  3. 6.5
  4. 5.5
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Correct answer: D. 5.5

At 25°C, pH + pOH = 14. So pOH = 14 - 8.5 = 5.5. Solution is mildly basic (pH > 7).

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In a saturated solution of AgCl, [Ag+] = 1.26 × 10⁻⁵. If KNO3 is added (no common ion), solubility of AgCl:

  1. Stays exactly the same
  2. Increases slightly due to salt effect
  3. Decreases
  4. Becomes zero
Show answer and solution

Correct answer: B. Increases slightly due to salt effect

Adding non-common-ion salt (KNO3) increases ionic strength, slightly decreasing activity coefficients of Ag+ and Cl-, allowing more AgCl to dissolve (salt effect). The increase is small but real.

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