calculate the molarity of the oxalic acid standard solution.

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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Using this data, calculate the molarity of the oxalic acid standard solution.

**Experiment 14: Acid-Base Titrations**

---

**Part I. Standardization of the Sodium Hydroxide Solution**

1. **Mass of Components**
   - Mass of weighing bottle + sample: 12.5253 g
   - Mass of weighing bottle - sample: 9.9932 g
   - Mass of H₂C₂O₄·2H₂O: 2.5320 g
   - Volume of H₂C₂O₄ solution: 250.00 mL

2. **NaOH Titration Data**

| Run Number | Volume of Oxalic Acid Used | NaOH Buret: Final Reading | NaOH Buret: Initial Reading | Volume of NaOH Used  |
|------------|----------------------------|---------------------------|----------------------------|----------------------|
| 1          | 25.00 mL                   | 42.10 mL                  | 0.20 mL                    | 41.90 mL             |
| 2          | 25.00 mL                   | 42.20 mL                  | 0.15 mL                    | 42.05 mL             |
| 3          | 25.00 mL                   | 42.35 mL                  | 0.40 mL                    | 41.95 mL             |
| 4          | 25.00 mL                   | 42.50 mL                  | 0.55 mL                    | 41.95 mL             |

---

**Part II. Determination of the Molar Mass of an Acid**  
**Unknown #:** _______  
**n =** _______

1. **Mass and NaOH Titration Data**

| Run Number | Mass of Test Tube + Sample | Mass of Test Tube - Sample | Mass of Sample | NaOH Buret: Final Reading | NaOH Buret: Initial Reading | Volume of NaOH Used |
|------------|----------------------------|----------------------------|----------------|---------------------------|----------------------------|---------------------|
| 1          | 1.7755 g                   | 1.6755 g                   | 0.0998 g       | 20.10 mL                  | 0.10 mL                    | 20.00 mL            |
| 2          | 1.6753 g                   | 1.5760 g                   | 0.
Transcribed Image Text:**Experiment 14: Acid-Base Titrations** --- **Part I. Standardization of the Sodium Hydroxide Solution** 1. **Mass of Components** - Mass of weighing bottle + sample: 12.5253 g - Mass of weighing bottle - sample: 9.9932 g - Mass of H₂C₂O₄·2H₂O: 2.5320 g - Volume of H₂C₂O₄ solution: 250.00 mL 2. **NaOH Titration Data** | Run Number | Volume of Oxalic Acid Used | NaOH Buret: Final Reading | NaOH Buret: Initial Reading | Volume of NaOH Used | |------------|----------------------------|---------------------------|----------------------------|----------------------| | 1 | 25.00 mL | 42.10 mL | 0.20 mL | 41.90 mL | | 2 | 25.00 mL | 42.20 mL | 0.15 mL | 42.05 mL | | 3 | 25.00 mL | 42.35 mL | 0.40 mL | 41.95 mL | | 4 | 25.00 mL | 42.50 mL | 0.55 mL | 41.95 mL | --- **Part II. Determination of the Molar Mass of an Acid** **Unknown #:** _______ **n =** _______ 1. **Mass and NaOH Titration Data** | Run Number | Mass of Test Tube + Sample | Mass of Test Tube - Sample | Mass of Sample | NaOH Buret: Final Reading | NaOH Buret: Initial Reading | Volume of NaOH Used | |------------|----------------------------|----------------------------|----------------|---------------------------|----------------------------|---------------------| | 1 | 1.7755 g | 1.6755 g | 0.0998 g | 20.10 mL | 0.10 mL | 20.00 mL | | 2 | 1.6753 g | 1.5760 g | 0.
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