### Understanding Weak Acids and Weak Bases Consider the following data on some weak acids and weak bases: #### **Acids** | Name | Formula | \( K_a \) | |------------------|-----------|--------------------| | Acetic acid | \( \text{HCH}_3\text{CO}_2 \) | \( 1.8 \times 10^{-5} \) | | Hydrofluoric acid| \( \text{HF} \) | \( 6.8 \times 10^{-4} \) | #### **Bases** | Name | Formula | \( K_b \) | |--------------|----------|--------------------| | Pyridine | \( \text{C}_5\text{H}_5\text{N} \) | \( 1.7 \times 10^{-9} \) | | Methylamine | \( \text{CH}_3\text{NH}_2 \) | \( 4.4 \times 10^{-4} \) | ### Task: Rank Solutions by pH Use this data to rank the following solutions in order of increasing pH. 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 Selection | |-------------------------------|------------------| | 0.1 M \( \text{CH}_3\text{NH}_3\text{Br} \) | [choose one] | | 0.1 M KF | [choose one] | | 0.1 M \( \text{C}_5\text{H}_5\text{NHCl} \) | [choose one] | | 0.1 M KBr | [choose one] | **Instruction for use:** Select the appropriate option based on your analysis of the acid-base properties and their respective \( K_a \) and \( K_b \) values.
### Understanding Weak Acids and Weak Bases Consider the following data on some weak acids and weak bases: #### **Acids** | Name | Formula | \( K_a \) | |------------------|-----------|--------------------| | Acetic acid | \( \text{HCH}_3\text{CO}_2 \) | \( 1.8 \times 10^{-5} \) | | Hydrofluoric acid| \( \text{HF} \) | \( 6.8 \times 10^{-4} \) | #### **Bases** | Name | Formula | \( K_b \) | |--------------|----------|--------------------| | Pyridine | \( \text{C}_5\text{H}_5\text{N} \) | \( 1.7 \times 10^{-9} \) | | Methylamine | \( \text{CH}_3\text{NH}_2 \) | \( 4.4 \times 10^{-4} \) | ### Task: Rank Solutions by pH Use this data to rank the following solutions in order of increasing pH. 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 Selection | |-------------------------------|------------------| | 0.1 M \( \text{CH}_3\text{NH}_3\text{Br} \) | [choose one] | | 0.1 M KF | [choose one] | | 0.1 M \( \text{C}_5\text{H}_5\text{NHCl} \) | [choose one] | | 0.1 M KBr | [choose one] | **Instruction for use:** Select the appropriate option based on your analysis of the acid-base properties and their respective \( K_a \) and \( K_b \) values.
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
![### Understanding Weak Acids and Weak Bases
Consider the following data on some weak acids and weak bases:
#### **Acids**
| Name | Formula | \( K_a \) |
|------------------|-----------|--------------------|
| Acetic acid | \( \text{HCH}_3\text{CO}_2 \) | \( 1.8 \times 10^{-5} \) |
| Hydrofluoric acid| \( \text{HF} \) | \( 6.8 \times 10^{-4} \) |
#### **Bases**
| Name | Formula | \( K_b \) |
|--------------|----------|--------------------|
| Pyridine | \( \text{C}_5\text{H}_5\text{N} \) | \( 1.7 \times 10^{-9} \) |
| Methylamine | \( \text{CH}_3\text{NH}_2 \) | \( 4.4 \times 10^{-4} \) |
### Task: Rank Solutions by pH
Use this data to rank the following solutions in order of increasing pH. 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 Selection |
|-------------------------------|------------------|
| 0.1 M \( \text{CH}_3\text{NH}_3\text{Br} \) | [choose one] |
| 0.1 M KF | [choose one] |
| 0.1 M \( \text{C}_5\text{H}_5\text{NHCl} \) | [choose one] |
| 0.1 M KBr | [choose one] |
**Instruction for use:** Select the appropriate option based on your analysis of the acid-base properties and their respective \( K_a \) and \( K_b \) values.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4c987733-f34e-46ba-9756-546ec3f6b862%2F2478f319-b93c-421c-8d53-7cdfd4420fde%2F7d53ov4_processed.png&w=3840&q=75)
Transcribed Image Text:### Understanding Weak Acids and Weak Bases
Consider the following data on some weak acids and weak bases:
#### **Acids**
| Name | Formula | \( K_a \) |
|------------------|-----------|--------------------|
| Acetic acid | \( \text{HCH}_3\text{CO}_2 \) | \( 1.8 \times 10^{-5} \) |
| Hydrofluoric acid| \( \text{HF} \) | \( 6.8 \times 10^{-4} \) |
#### **Bases**
| Name | Formula | \( K_b \) |
|--------------|----------|--------------------|
| Pyridine | \( \text{C}_5\text{H}_5\text{N} \) | \( 1.7 \times 10^{-9} \) |
| Methylamine | \( \text{CH}_3\text{NH}_2 \) | \( 4.4 \times 10^{-4} \) |
### Task: Rank Solutions by pH
Use this data to rank the following solutions in order of increasing pH. 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 Selection |
|-------------------------------|------------------|
| 0.1 M \( \text{CH}_3\text{NH}_3\text{Br} \) | [choose one] |
| 0.1 M KF | [choose one] |
| 0.1 M \( \text{C}_5\text{H}_5\text{NHCl} \) | [choose one] |
| 0.1 M KBr | [choose one] |
**Instruction for use:** Select the appropriate option based on your analysis of the acid-base properties and their respective \( K_a \) and \( K_b \) values.
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