Using the pH reading, calculate the concentration of H3O^+ ions in    a. the most acidic solution  b. the least acidic solution

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Using the pH reading, calculate the concentration of H3O^+ ions in 

 

a. the most acidic solution 

b. the least acidic solution 

### pH Measurement Data

This page presents a comparison between pH values obtained using a pH meter and pH paper for various solutions. The solutions are categorized into two groups.

#### Group 1 Solutions:
1. **HCl (Hydrochloric Acid)**  
   - pH meter: 1.48  
   - pH paper: 2

2. **H₃PO₄ (Phosphoric Acid)**  
   - pH meter: 1.84  
   - pH paper: 4

3. **CH₃COOH (Acetic Acid)**  
   - pH meter: 2.52  
   - pH paper: 4

4. **Al(NO₃)₃ (Aluminum Nitrate)**  
   - pH meter: 2.50  
   - pH paper: 5

5. **NH₄NO₃ (Ammonium Nitrate)**  
   - pH meter: 3.89  
   - pH paper: 5

6. **Zn(NO₃)₂ (Zinc Nitrate)**  
   - pH meter: 3.96  
   - pH paper: 3

#### Group 2 Solutions:
1. **Vinegar**  
   - pH meter: 2.34  
   - pH paper: 5

2. **Sprite®**  
   - pH meter: 3.11  
   - pH paper: 5

3. **Tap Water**  
   - pH meter: 6.30  
   - pH paper: 7

4. **Distilled Water**  
   - pH meter: 6.35  
   - pH paper: 6

### Observations:
- There are slight to significant discrepancies between the pH meter readings and the pH paper results.
- Acidic solutions generally show a greater variance between the two methods.
- Water samples (tap and distilled) display negligible differences.

### Laboratory Questions:
- Calculate the concentration of H₃O⁺ ions using the pH meter reading.
- Determine which method shows the least variability across samples.
Transcribed Image Text:### pH Measurement Data This page presents a comparison between pH values obtained using a pH meter and pH paper for various solutions. The solutions are categorized into two groups. #### Group 1 Solutions: 1. **HCl (Hydrochloric Acid)** - pH meter: 1.48 - pH paper: 2 2. **H₃PO₄ (Phosphoric Acid)** - pH meter: 1.84 - pH paper: 4 3. **CH₃COOH (Acetic Acid)** - pH meter: 2.52 - pH paper: 4 4. **Al(NO₃)₃ (Aluminum Nitrate)** - pH meter: 2.50 - pH paper: 5 5. **NH₄NO₃ (Ammonium Nitrate)** - pH meter: 3.89 - pH paper: 5 6. **Zn(NO₃)₂ (Zinc Nitrate)** - pH meter: 3.96 - pH paper: 3 #### Group 2 Solutions: 1. **Vinegar** - pH meter: 2.34 - pH paper: 5 2. **Sprite®** - pH meter: 3.11 - pH paper: 5 3. **Tap Water** - pH meter: 6.30 - pH paper: 7 4. **Distilled Water** - pH meter: 6.35 - pH paper: 6 ### Observations: - There are slight to significant discrepancies between the pH meter readings and the pH paper results. - Acidic solutions generally show a greater variance between the two methods. - Water samples (tap and distilled) display negligible differences. ### Laboratory Questions: - Calculate the concentration of H₃O⁺ ions using the pH meter reading. - Determine which method shows the least variability across samples.
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