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Equilibrium Quiz-5

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10 Questions

Popular Questions In Equilibrium Quiz-5

  • Which of the following salt solutions (0.1 M each) will have the lowest pH values?

  • A weak acid HX has pKa=5pK_ a= 5. The percent degree of hydrolysis of 0.1 M solution of salt NaX is

  • 2.5 mL of (2/5) M weak monoacidic base (Kb=1×1012K_b= 1 \times10^{-12} at 25C25^\circ C) is titrated with (2/15) M HCl in water at 25C25^\circ C. The concentration of H+H^+ at equivalence point is (Kw=1×1014K_w = 1 \times 10^{-14} at 25C25^\circ C)

  • What is the percentage hydrolysis of NaCN in N/80N/80 solution when the dissociation constant for HCN is 1.3×1091.3 \times 10^{-9} and Kw=1.0×1014.K_w = 1.0 \times 10^{-14}.

  • The pH of a 1M CH3COONaCH_3COONa solution in water will be nearly

  • Ammonium cyanide is a salt of NH4OH(Kb=1.8×105)NH_4OH(K_b = 1.8 \times10^{-5}) and HCN (Ka=4.0×1010)(K_a = 4.0 \times 10^{-10} ). The hydrolysis constant of 0.1 M NH4CNNH_4CN at 25C25^\circ C is

  • It is found that 0.1 M solution of three salts NaX, NaY and NaZ have pH values 7.0, 9.0 and 11.0 respectively. Which of the following order regarding acid strength is correct?

  • The degree of hydrolysis of ammonium acetate is related to its hydrolysis constant by the expression

  • The hydrolysis constant of anilinium acetate at 25C25^\circ C is (KaK_a (CH3COOH)(CH_3COOH) =1.8×105M= 1.8 \times 10^{-5}M and KbK_b (aniline) =4.6×1010M= 4.6 \times10^{-10} M)

  • The expression to compute pH of a solution containing a salt formed from a weak acid and a weak base is