What is the pH of a 0.010 0 M solution of sodium hydrogen phosphate, also known as dibasic sodium

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...
icon
Related questions
icon
Concept explainers
Question

Part D) Starting with 1.00 M NaOH and solid NaH2PO4 (FM 119.98), you want to make 500.0 mL of a 0.250 M buffer at pH 12.00. How much solid do you use, and what volume of NaOH would you expect to add?

### Table Information for Phosphoric Acid (H₃PO₄)

#### Name: Phosphoric acid

- **Structure:**

  ![Structural Formula](https://via.placeholder.com/150)

  ```
       O
       |
  HO - P - OH
       |
      OH
  ```

- **pKₐ Values:**
  - 2.148
  - 7.198
  - 12.375

- **Kₐ Values:**
  - 7.11 × 10⁻³
  - 6.34 × 10⁻⁸
  - 4.22 × 10⁻¹³

#### Questions:

a) What is the pH of a 0.010 M solution of sodium hydrogen phosphate, also known as dibasic sodium phosphate (Na₂HPO₄)?

b) What is the pH of a 0.010 M solution of sodium dihydrogen phosphate, also known as monobasic sodium phosphate (NaH₂PO₄)?
Transcribed Image Text:### Table Information for Phosphoric Acid (H₃PO₄) #### Name: Phosphoric acid - **Structure:** ![Structural Formula](https://via.placeholder.com/150) ``` O | HO - P - OH | OH ``` - **pKₐ Values:** - 2.148 - 7.198 - 12.375 - **Kₐ Values:** - 7.11 × 10⁻³ - 6.34 × 10⁻⁸ - 4.22 × 10⁻¹³ #### Questions: a) What is the pH of a 0.010 M solution of sodium hydrogen phosphate, also known as dibasic sodium phosphate (Na₂HPO₄)? b) What is the pH of a 0.010 M solution of sodium dihydrogen phosphate, also known as monobasic sodium phosphate (NaH₂PO₄)?
c) What is the concentration and expected pH of a buffer created by mixing 6.89 g of Na₂HPO₄ (FM 141.96) with 9.18 g of NaH₂PO₄ (FM 119.98) and diluting to a final volume of 500.0 mL?
Transcribed Image Text:c) What is the concentration and expected pH of a buffer created by mixing 6.89 g of Na₂HPO₄ (FM 141.96) with 9.18 g of NaH₂PO₄ (FM 119.98) and diluting to a final volume of 500.0 mL?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 7 steps

Blurred answer
Knowledge Booster
Ionic Equilibrium
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY