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Chemical Equilibrium Test - 38
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Chemical Equilibrium Test - 38
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  • Question 1/10
    4 / -1
    The buffering action of an acidic buffer is maximum when its pH is equal to
  • Question 2/10
    4 / -1
    Which of the following is not a buffer solution ?
  • Question 3/10
    4 / -1
    The pKa of a weak acid, H A, is 4.80. The pKb of a weak base, BOH is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be
  • Question 4/10
    4 / -1
    A buffer solution is prepared by mixing equal concentration of acid (ionisation constant Ka) and a salt. The pH of buffer is
  • Question 5/10
    4 / -1
    A buffer solution is prepared by mixing 0.1, M ammonia and 1.0 M ammonium chloride. At 298 K, the pKb of NH4OH is 5.0. The pH of the buffer is
  • Question 6/10
    4 / -1
    Assertion (A) The aqueous solution of CH3COONa is alkaline in nature.
    Reason (R) Acetate ion undergoes anionic hydrolysis.
  • Question 7/10
    4 / -1
    The pKa of a weak acid H A is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid ionised is
  • Question 8/10
    4 / -1
    The rapid change of pH near the stoichiometric point of an acid base titration is the basis of indicator detection. pH of the solution is related to the ratio of the concentrations of the conjugate acid (HIn) and base (In- ) forms of the indicator given by the expression
  • Question 9/10
    4 / -1
    The hydrolysis of sodium carbonate involves the reaction between
    Solutions

  • Question 10/10
    4 / -1
    Which one of the following salts on being dissolved in water gives pH > 7 at 25°C ?
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