Consider the reaction CaSO, (s) Ca²+ (aq) + SO² (aq) At 25 °C the equilibrium constant is Ke 2.4 x 10 for this reaction. Y Y If excess CaSO4(s) is mixed with water at 25 °C to produce a saturated solution of CaSO4, what is the equilibrium concentration of Ca²+? Express your answer to two significant figures and include the appropriate units. 4.9x10-3 M Submil ✔ Correct Part B If excess CaSO, (s) is mixed with water at 25 °C to produce a saturated solution of CaSO4. what is the equilibrium concentration of SO² ? Express your answer to two significant figures and include the appropriate units. Value Submit Part C Previous Answers A 6 Submit Value Request Answer If the resulting solution has a volume of 1.9 L, what is the minimum mass of CaSO, (s) needed to achieve equilibrium? Express your answer to two significant figures and include the appropriate units. PA 4 Units d Units ? Request Answer Review | Constants | Periodi

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**Problem 15.54**

Consider the reaction:

\[ \text{CaSO}_4 (s) \rightleftharpoons \text{Ca}^{2+} (aq) + \text{SO}_4^{2-} (aq) \]

At 25°C, the equilibrium constant is \( K_c = 2.4 \times 10^{-5} \) for this reaction.

---

**Part A**

If excess \(\text{CaSO}_4 (s)\) is mixed with water at 25°C to produce a saturated solution of \(\text{CaSO}_4\), what is the equilibrium concentration of \(\text{Ca}^{2+}\)?

- **Express your answer to two significant figures and include the appropriate units.**

\[ 4.9 \times 10^{-3} \, \text{M} \]

[Submit] [Previous Answers]

[✔ Correct]

---

**Part B**

If excess \(\text{CaSO}_4 (s)\) is mixed with water at 25°C to produce a saturated solution of \(\text{CaSO}_4\), what is the equilibrium concentration of \(\text{SO}_4^{2-}\)?

- **Express your answer to two significant figures and include the appropriate units.**

\[ \text{Value} \] \[ \text{Units} \]

[Submit] [Request Answer]

---

**Part C**

If the resulting solution has a volume of 1.0 L, what is the minimum mass of \(\text{CaSO}_4 (s)\) needed to achieve equilibrium?

- **Express your answer to two significant figures and include the appropriate units.**

\[ \text{Value} \] \[ \text{Units} \]

[Submit] [Request Answer]
Transcribed Image Text:**Problem 15.54** Consider the reaction: \[ \text{CaSO}_4 (s) \rightleftharpoons \text{Ca}^{2+} (aq) + \text{SO}_4^{2-} (aq) \] At 25°C, the equilibrium constant is \( K_c = 2.4 \times 10^{-5} \) for this reaction. --- **Part A** If excess \(\text{CaSO}_4 (s)\) is mixed with water at 25°C to produce a saturated solution of \(\text{CaSO}_4\), what is the equilibrium concentration of \(\text{Ca}^{2+}\)? - **Express your answer to two significant figures and include the appropriate units.** \[ 4.9 \times 10^{-3} \, \text{M} \] [Submit] [Previous Answers] [✔ Correct] --- **Part B** If excess \(\text{CaSO}_4 (s)\) is mixed with water at 25°C to produce a saturated solution of \(\text{CaSO}_4\), what is the equilibrium concentration of \(\text{SO}_4^{2-}\)? - **Express your answer to two significant figures and include the appropriate units.** \[ \text{Value} \] \[ \text{Units} \] [Submit] [Request Answer] --- **Part C** If the resulting solution has a volume of 1.0 L, what is the minimum mass of \(\text{CaSO}_4 (s)\) needed to achieve equilibrium? - **Express your answer to two significant figures and include the appropriate units.** \[ \text{Value} \] \[ \text{Units} \] [Submit] [Request Answer]
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