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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![### Example Problem: Concentration and Ion Identification for Sodium Dihydrogen Phosphate
**Objective:**
Determine the ions present in a 4.27 M solution of NaH₂PO₄ and calculate the concentration of cations and anions.
**Ions:**
- \( \text{PO}_4^{3-} \)
- \( \text{H}_2\text{PO}_4^{-} \)
- \( \text{PO}_4^{-} \)
- \( \text{Na}^{3+} \)
- \( \text{Na}^+ \)
- \( \text{NaH}^+ \)
**Instructions:**
1. **Select the ions present in the solution.** Only check ions that are present in NaH₂PO₄.
2. **Calculate the concentrations:**
- Use the provided formulas for concentration calculations.
- Fill in the correct concentrations for cations and anions in the input fields.
**[Concentration Calculations]**
- **[Cation\(^+\)] =** [Input Field] M
- **[Anion\(^-\)] =** [Input Field] M
### Key Considerations:
- **Dissociation of NaH₂PO₄**: In aqueous solutions, NaH₂PO₄ dissociates into Na\(^+\) and H₂PO₄\(^-\).
- **Concentration**: The concentration of each ion should reflect the stoichiometry of the dissociation process.
This framework will help students understand how to identify ions in solutions and accurately calculate their concentrations.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcfd0b005-6bb6-4305-a6fc-57d61aa2f772%2Ff43a6273-bb2a-498e-8246-d287f5ea521b%2Fvpjpyw4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Example Problem: Concentration and Ion Identification for Sodium Dihydrogen Phosphate
**Objective:**
Determine the ions present in a 4.27 M solution of NaH₂PO₄ and calculate the concentration of cations and anions.
**Ions:**
- \( \text{PO}_4^{3-} \)
- \( \text{H}_2\text{PO}_4^{-} \)
- \( \text{PO}_4^{-} \)
- \( \text{Na}^{3+} \)
- \( \text{Na}^+ \)
- \( \text{NaH}^+ \)
**Instructions:**
1. **Select the ions present in the solution.** Only check ions that are present in NaH₂PO₄.
2. **Calculate the concentrations:**
- Use the provided formulas for concentration calculations.
- Fill in the correct concentrations for cations and anions in the input fields.
**[Concentration Calculations]**
- **[Cation\(^+\)] =** [Input Field] M
- **[Anion\(^-\)] =** [Input Field] M
### Key Considerations:
- **Dissociation of NaH₂PO₄**: In aqueous solutions, NaH₂PO₄ dissociates into Na\(^+\) and H₂PO₄\(^-\).
- **Concentration**: The concentration of each ion should reflect the stoichiometry of the dissociation process.
This framework will help students understand how to identify ions in solutions and accurately calculate their concentrations.
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