Consider the following data on some weak acids and weak bases: name acetic acid hydrocyanic acid 0.1 M KBr acid solution 0.1 M NaCH3CO₂ 0.1 M C₂H5NH3CI 0.1 M HONH3Br Ka formula HCH₂ CO₂ 1.8 x 10-5 4.9 x 10-10 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. HCN X pH choose one choose one choose one choose one S ? base name Kh formula hydroxylamine HONH₂ 1.1 × 108 ethylamine C₂H5NH₂ 6.4 x 107 ol Ar

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### Acid and Base Data Table

**Consider the following data on some weak acids and weak bases:**

#### Acids
| Name          | Formula  | \( K_a \)        |
|---------------|----------|-----------------|
| Acetic acid   | \( \text{HCH}_3\text{CO}_2 \) | \( 1.8 \times 10^{-5} \)  |
| Hydrocyanic acid | \( \text{HCN} \)          | \( 4.9 \times 10^{-10} \) |

#### Bases
| Name          | Formula      | \( K_b \)        |
|---------------|--------------|-----------------|
| Hydroxylamine | \( \text{HONH}_2 \) | \( 1.1 \times 10^{-8} \)  |
| Ethylamine    | \( \text{C}_2\text{H}_5\text{NH}_2 \) | \( 6.4 \times 10^{-4} \)  |

---

**Use these 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 Ranking

| Solution                       | pH        |
|--------------------------------|-----------|
| \( 0.1\, M\, \text{NaCH}_3\text{CO}_2 \) | 
| \( 0.1\, M\, \text{C}_2\text{H}_5\text{NH}_3\text{Cl} \)  | 
| \( 0.1\, M\, \text{KBr} \)                  | 
| \( 0.1\, M\, \text{HONH}_3\text{Br} \)     | 


To rank the solutions:

1. Analyze the acids and bases' \( K_a \) and \( K_b \) values.
2. Determine the strengths of each as an acid or base.
3. Rank the solutions from the one with the lowest pH (most acidic) to the highest pH (most basic).
Transcribed Image Text:### Acid and Base Data Table **Consider the following data on some weak acids and weak bases:** #### Acids | Name | Formula | \( K_a \) | |---------------|----------|-----------------| | Acetic acid | \( \text{HCH}_3\text{CO}_2 \) | \( 1.8 \times 10^{-5} \) | | Hydrocyanic acid | \( \text{HCN} \) | \( 4.9 \times 10^{-10} \) | #### Bases | Name | Formula | \( K_b \) | |---------------|--------------|-----------------| | Hydroxylamine | \( \text{HONH}_2 \) | \( 1.1 \times 10^{-8} \) | | Ethylamine | \( \text{C}_2\text{H}_5\text{NH}_2 \) | \( 6.4 \times 10^{-4} \) | --- **Use these 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 Ranking | Solution | pH | |--------------------------------|-----------| | \( 0.1\, M\, \text{NaCH}_3\text{CO}_2 \) | | \( 0.1\, M\, \text{C}_2\text{H}_5\text{NH}_3\text{Cl} \) | | \( 0.1\, M\, \text{KBr} \) | | \( 0.1\, M\, \text{HONH}_3\text{Br} \) | To rank the solutions: 1. Analyze the acids and bases' \( K_a \) and \( K_b \) values. 2. Determine the strengths of each as an acid or base. 3. Rank the solutions from the one with the lowest pH (most acidic) to the highest pH (most basic).
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