stion A Concentrated weak acid is best described as which of the following? Select one: O a. a solution with a low pH O b. a solution where the concentration of unreacted acid particles is high and the relative quantity of hydronium ions is small O c. a solution where the concentration of unreacted acid particles is low compared to the concentration of hydronium ions O d. a solution where the concentration of hydronium ions is large compared to the concentration of unreacted acid particles

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### Understanding Weak Acids and Ionization

#### Question 13
**A concentrated weak acid is best described as which of the following?**

Select one:
- a. a solution with a low pH
- b. a solution where the concentration of unreacted acid particles is high and the relative quantity of hydronium ions is small
- c. a solution where the concentration of unreacted acid particles is low compared to the concentration of hydronium ions
- d. a solution where the concentration of hydronium ions is large compared to the concentration of unreacted acid particles

---

#### Question 14
**Which of the following is *not* totally ionized when mixed with water?**

Select one:
- a. HCl
- b. HClO4
- c. HI
- d. HSO3

---

### Detailed Explanation:

#### Concentrated Weak Acids:
A concentrated weak acid is characterized by a high concentration of the acid itself, but because it is a weak acid, it does not fully ionize in water. Most of the acid remains unreacted, with only a small proportion forming hydronium ions (H₃O⁺). Therefore, the correct answer to Question 13 is:
- **b. a solution where the concentration of unreacted acid particles is high and the relative quantity of hydronium ions is small**

#### Ionization in Water:
Strong acids are known to completely ionize in water, releasing a large number of hydronium ions. Weak acids do not ionize completely. Out of the options provided in Question 14, HCl (hydrochloric acid), HClO₄ (perchloric acid), and HI (hydroiodic acid) are all strong acids and completely ionize in water. HSO₃⁻ (bisulfite) is the only option that does not totally ionize, making it a weak acid.
- **d. HSO3**

---

These concepts are fundamental in understanding the behavior of acids in solutions, which is crucial for various scientific and industrial applications.
Transcribed Image Text:### Understanding Weak Acids and Ionization #### Question 13 **A concentrated weak acid is best described as which of the following?** Select one: - a. a solution with a low pH - b. a solution where the concentration of unreacted acid particles is high and the relative quantity of hydronium ions is small - c. a solution where the concentration of unreacted acid particles is low compared to the concentration of hydronium ions - d. a solution where the concentration of hydronium ions is large compared to the concentration of unreacted acid particles --- #### Question 14 **Which of the following is *not* totally ionized when mixed with water?** Select one: - a. HCl - b. HClO4 - c. HI - d. HSO3 --- ### Detailed Explanation: #### Concentrated Weak Acids: A concentrated weak acid is characterized by a high concentration of the acid itself, but because it is a weak acid, it does not fully ionize in water. Most of the acid remains unreacted, with only a small proportion forming hydronium ions (H₃O⁺). Therefore, the correct answer to Question 13 is: - **b. a solution where the concentration of unreacted acid particles is high and the relative quantity of hydronium ions is small** #### Ionization in Water: Strong acids are known to completely ionize in water, releasing a large number of hydronium ions. Weak acids do not ionize completely. Out of the options provided in Question 14, HCl (hydrochloric acid), HClO₄ (perchloric acid), and HI (hydroiodic acid) are all strong acids and completely ionize in water. HSO₃⁻ (bisulfite) is the only option that does not totally ionize, making it a weak acid. - **d. HSO3** --- These concepts are fundamental in understanding the behavior of acids in solutions, which is crucial for various scientific and industrial applications.
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