2. Concentration of metal ion. Absorbance of metal ion in solution 0.316 Concentration of metal ion from the calibration curve (mol/L) 0.084 Concentration of metal ion in the original sample corrected for dilution (mol/L) Show your calculations to account for the dilution of the original sample.
2. Concentration of metal ion. Absorbance of metal ion in solution 0.316 Concentration of metal ion from the calibration curve (mol/L) 0.084 Concentration of metal ion in the original sample corrected for dilution (mol/L) Show your calculations to account for the dilution of the original sample.
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
i need help with 2 and 3, please show calculations
![**Unknown Metal Ion Concentration**
1. **Prepare the Unknown:**
- Pipet 20 mL of unknown sample into a 25 mL volumetric flask.
- Add 1 to 2 mL of concentrated NH₃.
- Dilute to the 25 mL mark with 0.01 M HNO₃. Agitate.
**Volumes:**
- Volume of unknown sample solution (mL): 20
- Volume of diluted sample (mL): 25
2. **Concentration of Metal Ion:**
- Absorbance of metal ion in solution: 0.316
- Concentration of metal ion from the calibration curve (mol/L): 0.084
- Concentration of metal ion in the original sample corrected for dilution (mol/L):
- [Blank space for calculation input]
**Calculation:**
- Show your calculations to account for the dilution of the original sample.
3. **Expressing Concentration:**
- Express the concentration of the metal ion in the sample in appropriate units of mass/volume [i.e., ppb, ppm, percent, etc.].
- Concentration of metal ion in the original sample (mass/volume):
- [Blank space for calculation input]
**Calculation:**
- Show calculations.
---
**Laboratory Questions**
- [Following sections or questions not included in the screenshot.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0a649de7-a7ff-4d39-839c-f05925276079%2F5197eb0b-0157-4bbc-a55f-49a072aa47ed%2F4hfdkig.jpeg&w=3840&q=75)
Transcribed Image Text:**Unknown Metal Ion Concentration**
1. **Prepare the Unknown:**
- Pipet 20 mL of unknown sample into a 25 mL volumetric flask.
- Add 1 to 2 mL of concentrated NH₃.
- Dilute to the 25 mL mark with 0.01 M HNO₃. Agitate.
**Volumes:**
- Volume of unknown sample solution (mL): 20
- Volume of diluted sample (mL): 25
2. **Concentration of Metal Ion:**
- Absorbance of metal ion in solution: 0.316
- Concentration of metal ion from the calibration curve (mol/L): 0.084
- Concentration of metal ion in the original sample corrected for dilution (mol/L):
- [Blank space for calculation input]
**Calculation:**
- Show your calculations to account for the dilution of the original sample.
3. **Expressing Concentration:**
- Express the concentration of the metal ion in the sample in appropriate units of mass/volume [i.e., ppb, ppm, percent, etc.].
- Concentration of metal ion in the original sample (mass/volume):
- [Blank space for calculation input]
**Calculation:**
- Show calculations.
---
**Laboratory Questions**
- [Following sections or questions not included in the screenshot.]
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