acid base K K₂b name formula name formula 10 nitrous acid HNO₂ 4.5 x 10 aniline |C HạNH, | 4.3 × 10 acetic acid HCH3CO₂ 1.8 x 10-5 methylamine CH3NH₂ 4.4×10 4 se this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to e solution that will have the next lowest pH, and so on. solution pH 0.1 M C6H5NH3Br ✓ choose one 1 (lowest) 0.1 M KCH3CO₂ 2 3 0.1 M CH3NH3CI 4 (highest) 0.1 M NaNO₂ choose one

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Chapter1: Chemical Foundations
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## Data on Weak Acids and Weak Bases

### Acid
| **Name**       | **Formula**  | **Ka**            |
|----------------|--------------|-------------------|
| Nitrous Acid   | HNO₂         | 4.5 × 10⁻⁴       |
| Acetic Acid    | HCH₃CO₂      | 1.8 × 10⁻⁵       |

### Base
| **Name**       | **Formula**  | **Kb**            |
|----------------|--------------|-------------------|
| Aniline        | C₆H₅NH₂     | 4.3 × 10⁻¹⁰      |
| Methylamine    | CH₃NH₂      | 4.4 × 10⁻⁴       |

### Ranking Solutions by pH
Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on.

| **Solution**       | **pH**            |
|--------------------|-------------------|
| **0.1 M C₆H₅NH₃Br** | ![dropdown](dropdown.png)  |
| **0.1 M KCH₃CO₂**  | ![dropdown](dropdown.png)  |
| **0.1 M CH₃NH₃Cl** | ![dropdown](dropdown.png)  |
| **0.1 M NaNO₂**    | ![dropdown](dropdown.png)  |

Select the appropriate numbers (1-4) to correctly rank the solutions in terms of their pH levels:

1. **Lowest pH**
2. 
3. 
4. **Highest pH**

---

**Explanation of Ranking:**

- Solutions with weak acids or their conjugate bases will have varying pH levels based on the given \(K_a\) and \(K_b\) values. 
- Typically, solutions with weak acids will have lower pH values, compared to their conjugate bases which will have higher pH values.
- The provided \(K_a\) and \(K_b\) values give insight into the strength of the acids and bases, affecting their dissociation in water and hence their hydrogen ion concentration (p
Transcribed Image Text:## Data on Weak Acids and Weak Bases ### Acid | **Name** | **Formula** | **Ka** | |----------------|--------------|-------------------| | Nitrous Acid | HNO₂ | 4.5 × 10⁻⁴ | | Acetic Acid | HCH₃CO₂ | 1.8 × 10⁻⁵ | ### Base | **Name** | **Formula** | **Kb** | |----------------|--------------|-------------------| | Aniline | C₆H₅NH₂ | 4.3 × 10⁻¹⁰ | | Methylamine | CH₃NH₂ | 4.4 × 10⁻⁴ | ### Ranking Solutions by pH Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. | **Solution** | **pH** | |--------------------|-------------------| | **0.1 M C₆H₅NH₃Br** | ![dropdown](dropdown.png) | | **0.1 M KCH₃CO₂** | ![dropdown](dropdown.png) | | **0.1 M CH₃NH₃Cl** | ![dropdown](dropdown.png) | | **0.1 M NaNO₂** | ![dropdown](dropdown.png) | Select the appropriate numbers (1-4) to correctly rank the solutions in terms of their pH levels: 1. **Lowest pH** 2. 3. 4. **Highest pH** --- **Explanation of Ranking:** - Solutions with weak acids or their conjugate bases will have varying pH levels based on the given \(K_a\) and \(K_b\) values. - Typically, solutions with weak acids will have lower pH values, compared to their conjugate bases which will have higher pH values. - The provided \(K_a\) and \(K_b\) values give insight into the strength of the acids and bases, affecting their dissociation in water and hence their hydrogen ion concentration (p
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