Consider the following data on some weak acids and weak bases: acid base Ka name formula name formula HNO2 | 4.5 x 10 ethylamine C,H;NH,|6.4× 10¯ nitrous acid hydrocyanic acid HCN 4.9 × 10¬10 pyridine C;H;N |1.7×1o¬ 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 C5H5NHB. choose one v 0.1 M KNO2 choose one v 0.1 M C2H5NH3CI choose one v 0.1 M NaCN choose one v

Consider the following data on some weak acids and weak bases: acid base Ka name formula name formula HNO2 | 4.5 x 10 ethylamine C,H;NH,|6.4× 10¯ nitrous acid hydrocyanic acid HCN 4.9 × 10¬10 pyridine C;H;N |1.7×1o¬ 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 C5H5NHB. choose one v 0.1 M KNO2 choose one v 0.1 M C2H5NH3CI choose one v 0.1 M NaCN choose one v

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

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

| **acid** | **name** | **formula** | \( K_a \) |
|------------------|-----------------|-------------|--------------------|
| nitrous acid | HNO\(_2\) | 4.5 × 10\(^{-4}\) |
| hydrocyanic acid | HCN | 4.9 × 10\(^{-10}\) |

| **base** | **name** | **formula** | \( K_b \) |
|------------------|-----------------|--------------|--------------------|
| ethylamine | C\(_2\)H\(_5\)NH\(_2\) | 6.4 × 10\(^{-4}\) |
| pyridine | C\(_5\)H\(_5\)N | 1.7 × 10\(^{-9}\) |

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 C\(_5\)H\(_5\)NHBr | choose one |
| 0.1 M KNO\(_2\) | choose one |
| 0.1 M C\(_2\)H\(_5\)NH\(_3\)Cl | choose one |
| 0.1 M NaCN | choose one |

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