Consider the following data on some weak acids and weak bases: acid base Ka K, name formula name formula HCN 4.9 × 10¯10 C,H;NH, 6.4 × 10 -4 hydrocyanic acid ethylamine HNO, 4.5 x 10™ hydroxylamine HONH, |1.1 × 10~8 nitrous acid Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' 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 Nal choose one a 0.1 M KCN choose one e 0.1 M NaNO2 choose one e 0.1 M C2H5NH3CI choose one a

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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**Consider the following data on some weak acids and weak bases:**

**Acids:**

| Name                | Formula | \(K_a\)            |
|---------------------|---------|------------------|
| Hydrocyanic acid    | HCN     | \(4.9 \times 10^{-10}\) |
| Nitrous acid        | HNO\(_2\) | \(4.5 \times 10^{-4}\)  |

**Bases:**

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

---

**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.**

**Solutions:**

| Solution            | pH          |
|---------------------|-------------|
| 0.1 M NaI           | choose one  |
| 0.1 M KCN           | choose one  |
| 0.1 M NaNO\(_2\)     | choose one  |
| 0.1 M C\(_2\)H\(_5\)NH\(_3\)Cl | choose one  |
Transcribed Image Text:**Consider the following data on some weak acids and weak bases:** **Acids:** | Name | Formula | \(K_a\) | |---------------------|---------|------------------| | Hydrocyanic acid | HCN | \(4.9 \times 10^{-10}\) | | Nitrous acid | HNO\(_2\) | \(4.5 \times 10^{-4}\) | **Bases:** | Name | Formula | \(K_b\) | |------------------|-------------|------------------| | Ethylamine | C\(_2\)H\(_5\)NH\(_2\) | \(6.4 \times 10^{-4}\) | | Hydroxylamine | HONH\(_2\) | \(1.1 \times 10^{-8}\) | --- **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.** **Solutions:** | Solution | pH | |---------------------|-------------| | 0.1 M NaI | choose one | | 0.1 M KCN | choose one | | 0.1 M NaNO\(_2\) | choose one | | 0.1 M C\(_2\)H\(_5\)NH\(_3\)Cl | choose one |
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