Ionic Equilibrium

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Q. What is the pH of a buffer solution containing 0.2 M acetic acid and 0.1 M sodium acetate?
  • A. 4.76
  • B. 5.00
  • C. 5.74
  • D. 6.00
Q. What is the pH of a buffer solution made from 0.2 M acetic acid and 0.2 M sodium acetate?
  • A. 4.76
  • B. 5.76
  • C. 6.76
  • D. 7.76
Q. What is the pH of a solution formed by mixing equal volumes of 0.1 M HCl and 0.1 M NaOH?
  • A. 7
  • B. 1
  • C. 0
  • D. 14
Q. What is the pH of a solution that has a hydrogen ion concentration of 1 x 10^-5 M?
  • A. 5
  • B. 7
  • C. 9
  • D. 10
Q. What is the pH of a solution that has a hydronium ion concentration of 1 x 10^-5 M?
  • A. 5
  • B. 7
  • C. 9
  • D. 10
Q. What is the pH of a solution that has a hydroxide ion concentration of 1.0 x 10^-3 M?
  • A. 11
  • B. 10
  • C. 3
  • D. 1
Q. What is the pH of a solution that has a [H+] concentration of 1 x 10^-7 M?
  • A. 7
  • B. 0
  • C. 14
  • D. 1
Q. What is the pH of a solution that is 0.1 M in both acetic acid and sodium acetate?
  • A. 4.76
  • B. 5.76
  • C. 6.76
  • D. 7.76
Q. What is the pH of a solution with a hydroxide ion concentration of 0.001 M?
  • A. 11
  • B. 12
  • C. 13
  • D. 14
Q. What is the pH of a solution with a hydroxide ion concentration of 1.0 x 10^-4 M?
  • A. 10
  • B. 4
  • C. 7
  • D. 14
Q. What is the pH of a solution with [H+] = 1 x 10^-6 M?
  • A. 6
  • B. 7
  • C. 8
  • D. 5
Q. What is the primary reason for the formation of a precipitate in a saturated solution?
  • A. Excess solute
  • B. Temperature increase
  • C. Change in pH
  • D. Decrease in solubility product
Q. What is the primary reason for the increase in pH when a weak acid is titrated with a strong base?
  • A. Formation of water
  • B. Neutralization of acid
  • C. Formation of a conjugate base
  • D. All of the above
Q. What is the primary species present in a solution of acetic acid (CH3COOH)?
  • A. CH3COO-
  • B. H+
  • C. CH3COOH
  • D. H2O
Q. What is the primary species present in a solution of sodium acetate (CH3COONa)?
  • A. CH3COO-
  • B. Na+
  • C. H+
  • D. OH-
Q. What is the relationship between Ka and Kb for a conjugate acid-base pair?
  • A. Ka + Kb = Kw
  • B. Ka * Kb = Kw
  • C. Ka - Kb = Kw
  • D. Ka / Kb = Kw
Q. What is the relationship between pKa and Ka for a weak acid?
  • A. pKa = -log(Ka)
  • B. pKa = log(Ka)
  • C. pKa = Ka
  • D. pKa = 1/Ka
Q. What is the relationship between pKa and Ka for an acid?
  • A. pKa = -log(Ka)
  • B. pKa = log(Ka)
  • C. pKa = Ka
  • D. pKa = 1/Ka
Q. What is the relationship between pKa and Ka?
  • A. pKa = -log(Ka)
  • B. pKa = log(Ka)
  • C. pKa = Ka
  • D. pKa = 1/Ka
Q. Which of the following acids is a weak acid?
  • A. HCl
  • B. H2SO4
  • C. CH3COOH
  • D. HNO3
Q. Which of the following ions will cause the precipitation of AgCl from a solution of AgNO3?
  • A. Na+
  • B. Cl-
  • C. NO3-
  • D. K+
Q. Which of the following ions will cause the precipitation of BaSO4 from a solution of barium chloride?
  • A. Na+
  • B. Cl-
  • C. SO4^2-
  • D. K+
Q. Which of the following ions will cause the precipitation of silver chloride (AgCl) from a solution?
  • A. Na+
  • B. Cl-
  • C. Ag+
  • D. K+
Q. Which of the following ions will increase the acidity of a solution?
  • A. Na+
  • B. Cl-
  • C. NH4+
  • D. K+
Q. Which of the following is a characteristic of a buffer solution?
  • A. It changes pH drastically with small amounts of acid or base
  • B. It resists changes in pH
  • C. It has a pH of 7
  • D. It can only be made from strong acids and bases
Q. Which of the following is a strong base?
  • A. NH4OH
  • B. NaOH
  • C. CH3COONa
  • D. K2CO3
Q. Which of the following is true about a buffer solution?
  • A. Resists changes in pH
  • B. Has a pH of 7
  • C. Contains only strong acids
  • D. Is always neutral
Q. Which of the following salts will produce a basic solution when dissolved in water?
  • A. NaCl
  • B. KNO3
  • C. NH4Cl
  • D. Na2CO3
Q. Which of the following statements about strong acids is true?
  • A. They partially dissociate in solution
  • B. They completely dissociate in solution
  • C. They have high pKa values
  • D. They do not conduct electricity
Q. Which of the following statements about the common ion effect is true?
  • A. It increases solubility
  • B. It decreases solubility
  • C. It has no effect on solubility
  • D. It only applies to strong electrolytes
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