Tartaric acid is found in many fruits including grapes. Tartaric acid is partly responsible for the dry texture of certain wines. Tartaric acid, H2C4H4O6, is a diprotic acid with the following Ką values: Ka1 = 1.00 x 10-3; Ka2 = 4.60 x 10-5 a. Write the equation for the 1st jonization of tartaric acid. b. Write the equation for the 2nd ionization of tartaric acid. c. Write the Ką expression for the 1st ionization.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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**Tartaric Acid and Its Ionization**

**Introduction:**
Tartaric acid is found in many fruits, including grapes. It is partly responsible for the dry texture of certain wines. Tartaric acid (H₂C₄H₄O₆) is a diprotic acid with two ionization constants:
- \( K_{\text{a1}} = 1.00 \times 10^{-3} \)
- \( K_{\text{a2}} = 4.60 \times 10^{-5} \)

**Tasks:**

**a. Write the equation for the 1st ionization of tartaric acid.**

**b. Write the equation for the 2nd ionization of tartaric acid.**

**c. Write the \( K_{\text{a}} \) expression for the 1st ionization.**

**d. Write the \( K_{\text{a}} \) expression for the 2nd ionization.**

**e. What are the equilibrium concentrations of the reactants and products from the 1st ionization of a 0.250 M solution of tartaric acid?**

**f. What are the equilibrium concentrations of the reactants and products from the 2nd ionization?**

**g. What is the total \([H_3O^+]\) and the overall pH of the solution of tartaric acid?**

**Discussion:**
The questions focus on understanding the ionization process of diprotic acids, calculating equilibrium concentrations, and linking these to pH levels in solutions.
Transcribed Image Text:**Tartaric Acid and Its Ionization** **Introduction:** Tartaric acid is found in many fruits, including grapes. It is partly responsible for the dry texture of certain wines. Tartaric acid (H₂C₄H₄O₆) is a diprotic acid with two ionization constants: - \( K_{\text{a1}} = 1.00 \times 10^{-3} \) - \( K_{\text{a2}} = 4.60 \times 10^{-5} \) **Tasks:** **a. Write the equation for the 1st ionization of tartaric acid.** **b. Write the equation for the 2nd ionization of tartaric acid.** **c. Write the \( K_{\text{a}} \) expression for the 1st ionization.** **d. Write the \( K_{\text{a}} \) expression for the 2nd ionization.** **e. What are the equilibrium concentrations of the reactants and products from the 1st ionization of a 0.250 M solution of tartaric acid?** **f. What are the equilibrium concentrations of the reactants and products from the 2nd ionization?** **g. What is the total \([H_3O^+]\) and the overall pH of the solution of tartaric acid?** **Discussion:** The questions focus on understanding the ionization process of diprotic acids, calculating equilibrium concentrations, and linking these to pH levels in solutions.
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