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Questions and Answers
Which type of salt is represented by the formula NaHCO₃?
Which type of salt is represented by the formula NaHCO₃?
What is the pH of a solution formed by mixing 75 mL of 0.1 M CH₃COOH and 25 mL of 0.1 M NaOH?
What is the pH of a solution formed by mixing 75 mL of 0.1 M CH₃COOH and 25 mL of 0.1 M NaOH?
What happens to the solubility of a salt when a common ion is added?
What happens to the solubility of a salt when a common ion is added?
If the Ksp of AgCl is 10⁻¹⁰ (mol²/L²), what is the solubility of AgCl in 0.1 M AgNO₃?
If the Ksp of AgCl is 10⁻¹⁰ (mol²/L²), what is the solubility of AgCl in 0.1 M AgNO₃?
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In the isohydric sol concept, how is the relative strength of two acids related?
In the isohydric sol concept, how is the relative strength of two acids related?
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When a mixture shows that Kjp > Ksp, what occurs?
When a mixture shows that Kjp > Ksp, what occurs?
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How is the solubility of AgCl affected in a solution of 0.1 M CaCl₂ compared to pure water?
How is the solubility of AgCl affected in a solution of 0.1 M CaCl₂ compared to pure water?
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What type of buffer is created by mixing acetic acid and sodium acetate?
What type of buffer is created by mixing acetic acid and sodium acetate?
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What type of salt is represented by the formula K₂SO₄.Al₂(SO₄)₃.24H₂O?
What type of salt is represented by the formula K₂SO₄.Al₂(SO₄)₃.24H₂O?
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Which method is NOT a way to prepare an acidic buffer?
Which method is NOT a way to prepare an acidic buffer?
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What is the calculated pH when 50 mL of 2M acetic acid is mixed with 10 mL of 1M sodium acetate?
What is the calculated pH when 50 mL of 2M acetic acid is mixed with 10 mL of 1M sodium acetate?
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In the reaction C(s) + CO₂(g) ⇌ 2CO(g), if the equilibrium pressure is 12 atm, what is the value of Kp?
In the reaction C(s) + CO₂(g) ⇌ 2CO(g), if the equilibrium pressure is 12 atm, what is the value of Kp?
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For the reaction NH₄HS(s) ⇌ NH₃(g) + H₂S(g) with an observed pressure of 1.12 atm, what is the value of Kp?
For the reaction NH₄HS(s) ⇌ NH₃(g) + H₂S(g) with an observed pressure of 1.12 atm, what is the value of Kp?
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Which of the following conjugate base pairs is correctly matched?
Which of the following conjugate base pairs is correctly matched?
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What happens to the concentration of reactants when their concentration decreases according to Le Chatelier's principle?
What happens to the concentration of reactants when their concentration decreases according to Le Chatelier's principle?
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In the equilibrium expression for $2NH₃
ightleftharpoons N₂ + 3H₂$, how are the moles of products calculated?
In the equilibrium expression for $2NH₃ ightleftharpoons N₂ + 3H₂$, how are the moles of products calculated?
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What is the resulting pH when mixing equal volumes of 0.02 M HOCI and 0.2 M CH₃COOH?
What is the resulting pH when mixing equal volumes of 0.02 M HOCI and 0.2 M CH₃COOH?
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When calculating the pH of a mixture of 0.01 M NaH₂PO₄ and 0.1 M Na₂HPO₄, what is the resulting pH?
When calculating the pH of a mixture of 0.01 M NaH₂PO₄ and 0.1 M Na₂HPO₄, what is the resulting pH?
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In a mixture of 10⁻¹ M HCl and 10⁻² M CH₃COOH, what is the calculated pH?
In a mixture of 10⁻¹ M HCl and 10⁻² M CH₃COOH, what is the calculated pH?
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What does the hydrolysis of CH₃COO⁻ in water produce?
What does the hydrolysis of CH₃COO⁻ in water produce?
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Which factor primarily determines whether the solution of a weak acid and strong base is acidic or basic after hydrolysis?
Which factor primarily determines whether the solution of a weak acid and strong base is acidic or basic after hydrolysis?
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What is the effect of increasing pressure on the equilibrium of the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g)?
What is the effect of increasing pressure on the equilibrium of the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g)?
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For an endothermic reaction, how does increasing the temperature affect the equilibrium?
For an endothermic reaction, how does increasing the temperature affect the equilibrium?
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What happens to the equilibrium when an inert gas is added at constant pressure?
What happens to the equilibrium when an inert gas is added at constant pressure?
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In the reaction H₂(g) + I₂(g) ⇌ 2HI(g), what is the value of Δn?
In the reaction H₂(g) + I₂(g) ⇌ 2HI(g), what is the value of Δn?
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In a reaction quotient Q, when is it equal to the equilibrium constant K?
In a reaction quotient Q, when is it equal to the equilibrium constant K?
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What describes the degree of dissociation for the reaction A ⇌ 2B?
What describes the degree of dissociation for the reaction A ⇌ 2B?
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What role do Lewis acids perform in chemical reactions?
What role do Lewis acids perform in chemical reactions?
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In the equilibrium constant expression Kc = [C]ʸ[D]ˢ / [A]ᵃ[B]ᵇ, what does the symbol Qc refer to when not at equilibrium?
In the equilibrium constant expression Kc = [C]ʸ[D]ˢ / [A]ᵃ[B]ᵇ, what does the symbol Qc refer to when not at equilibrium?
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What is the pH of a 10⁻³ M HCl solution?
What is the pH of a 10⁻³ M HCl solution?
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What is the resulting pH when mixing 50 mL of HCl with 50 mL of H₂SO₄?
What is the resulting pH when mixing 50 mL of HCl with 50 mL of H₂SO₄?
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Which of the following is a correct relationship in acid-base theory?
Which of the following is a correct relationship in acid-base theory?
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Which equation correctly describes the relationship between pH and pOH at 25°C?
Which equation correctly describes the relationship between pH and pOH at 25°C?
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For a weak polybasic acid such as phosphoric acid, what is true about its dissociation constants?
For a weak polybasic acid such as phosphoric acid, what is true about its dissociation constants?
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What is the calculated pH for a solution with a hydrogen ion concentration of 10⁻⁸ M from HCl?
What is the calculated pH for a solution with a hydrogen ion concentration of 10⁻⁸ M from HCl?
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In the context of acid-base theory, what is formed when a strong base reacts with a weak acid?
In the context of acid-base theory, what is formed when a strong base reacts with a weak acid?
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When calculating the pH of a mixture of two weak acids, which formula would you use?
When calculating the pH of a mixture of two weak acids, which formula would you use?
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Study Notes
Types of Salts
- Normal salts: Examples include NaCl, Na₂SO₄, and Na₃PO₄.
- Acid salts: Examples include NaHCO₃ and NaHSO₄.
- Basic salts: Examples include Zn(OH)Cl and Mg(OH)Cl.
- Double salts: Example is K₂SO₄·Al₂(SO₄)₃·24H₂O (Potash alum).
- Complex salts: Examples include [Ag(NH₃)₂]Cl and [Cu(NH₃)₄]SO₄.
- Mixed salts: Examples include NaKS and NaKRbPO₄.
Isohydric Solutions
- Solutions having the same [H⁺] concentration.
- [Ka₁][C₁] = [Ka₂][C₂]
Relative Strengths of Acids
- The relative strength of acids is related to their H⁺ ion concentrations
- R.S = [H⁺]√Ka₁/Ka₂
Buffer Solutions
- Mixtures of a weak acid and its salt, or a weak base and its salt, resist changes in pH.
- These solutions are important in many chemical and biological systems, as they maintain a relatively constant pH.
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Description
Test your knowledge on different types of salts, isohydric solutions, and buffer solutions. This quiz explores the relative strengths of acids and various salt classifications. Perfect for chemistry students looking to reinforce their understanding of these concepts.
