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Chemical Equilibrium Test - 47
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Chemical Equilibrium Test - 47
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  • Question 1/10
    4 / -1
    The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1 M) is 1/100th of that of a strong acid (HX, 1 M) at 25o C. The Ka HA is equal to
    Solutions

  • Question 2/10
    4 / -1
    For the following three reactions I, II and III, equilibrium constants are given
    I. CO (g) + H2O ⇌ CO2 (g) + H2 (g), K1
    II. CH4 (g) + H2O (g) ⇌ CO (g) + 3H2 (g), K2
    III. CH4 (g) + 2H2O (g) ⇌ CO2 (g) + 4H2 (g), K3
    Which of the following relations is correct ?
  • Question 3/10
    4 / -1

    Solutions

  • Question 4/10
    4 / -1
    2.5 mL of 2/5 M weak monoacidic base (Kb =1 × 10-12 at 25oC) is titrated with 2/15 M HCl in water at 25oC. The concentration of H+ at equivalence point is (Kw = 1 × 10-14 at 25o C )
  • Question 5/10
    4 / -1
    Look at the following reactions carried out in closed vessels:
    (i) PCl5 → PCl3 + Cl2
    (ii) N2 + O2 → 2NO
    (iii) 2KClO3 → 2KCl + 3O2
    (iV) Fe3+ + SCN– → Fe(SCN)2+
    Which one of them is irreversible ?
  • Question 6/10
    4 / -1
    According to law of Mass Action, for the reaction 2A + B → Products
  • Question 7/10
    4 / -1
    If Δn = (np – nr) is the change in the number of moles of gaseous substances during a reaction, then equilibrium constants Kp and Kc are related as
    Solutions

  • Question 8/10
    4 / -1
    The relation between Kp and Kc for the reaction

  • Question 9/10
    4 / -1
    The ratio of Kp /Kc for the reaction:

    Solutions

  • Question 10/10
    4 / -1
    For a homogeneous chemical reaction, Kp = kc when
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