A student prepares a solution for titration by adding a 10.00 mL aliquot of a solution saturated with Ca(OH)2 at 82.9°C to 25.0 mL of deionized water. This solution is titrated with a standardized 0.01252 M HCl solution. The equivalence point is observed after 17.94 mL of the HCl solution has been added.
A student prepares a solution for titration by adding a 10.00 mL aliquot of a solution saturated with Ca(OH)2 at 82.9°C to 25.0 mL of deionized water. This solution is titrated with a standardized 0.01252 M HCl solution. The equivalence point is observed after 17.94 mL of the HCl solution has been added.
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter15: Solutions
Section: Chapter Questions
Problem 54QAP
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Question
A student prepares a solution for titration by adding a 10.00 mL aliquot of a solution saturated with Ca(OH)2 at 82.9°C to 25.0 mL of deionized water. This solution is titrated with a standardized 0.01252 M HCl solution. The equivalence point is observed after 17.94 mL of the HCl solution has been added.
![**Chemical Equation: Dissolution of Calcium Hydroxide**
The chemical equation depicted shows the dissolution of calcium hydroxide in water:
\[ \text{Ca(OH)}_2 (s) \rightleftharpoons \text{Ca}^{2+}_{(aq)} + 2\text{OH}^-_{(aq)} \quad (1) \]
**Explanation:**
- **Ca(OH)\(_2\) (s):** This represents solid calcium hydroxide.
- **Ca\(^{2+}_{(aq)}\):** This indicates the aqueous calcium ions formed in the solution.
- **2OH\(^{-}_{(aq)}\):** This signifies two hydroxide ions in an aqueous state.
- **Equilibrium Arrow (\(\rightleftharpoons\)):** The double arrow indicates that the reaction is in a state of dynamic equilibrium, where the dissolution of calcium hydroxide and its precipitation occur at the same rate.
This equation is crucial for understanding the solubility and behavior of calcium hydroxide in aqueous solutions, particularly in applications involving water treatment, soil stabilization, and various chemical processes.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff88cebe2-352c-470f-b6e0-51493d9d8ad6%2F31946ede-7ee1-4f71-8a0b-12fea84e2e96%2Fx4uciak_processed.png&w=3840&q=75)
Transcribed Image Text:**Chemical Equation: Dissolution of Calcium Hydroxide**
The chemical equation depicted shows the dissolution of calcium hydroxide in water:
\[ \text{Ca(OH)}_2 (s) \rightleftharpoons \text{Ca}^{2+}_{(aq)} + 2\text{OH}^-_{(aq)} \quad (1) \]
**Explanation:**
- **Ca(OH)\(_2\) (s):** This represents solid calcium hydroxide.
- **Ca\(^{2+}_{(aq)}\):** This indicates the aqueous calcium ions formed in the solution.
- **2OH\(^{-}_{(aq)}\):** This signifies two hydroxide ions in an aqueous state.
- **Equilibrium Arrow (\(\rightleftharpoons\)):** The double arrow indicates that the reaction is in a state of dynamic equilibrium, where the dissolution of calcium hydroxide and its precipitation occur at the same rate.
This equation is crucial for understanding the solubility and behavior of calcium hydroxide in aqueous solutions, particularly in applications involving water treatment, soil stabilization, and various chemical processes.
![### Problem Statement
**Calculate the moles of Ca²⁺ in the 10.00 ml sample.**
(See equation 1 in the procedure)
Your answer should have 4 sig figs.
**Answer:**
[Text box for answer input]
### Explanation
In this task, you are required to determine the amount of calcium ions (Ca²⁺) present in a given 10.00 ml sample. To solve this, you will refer to "equation 1 in the procedure," a part of your experimental or textbook instructions that presumably provides the necessary formula or ratio for calculation. Ensure your final answer includes four significant figures for precision.
There are no graphs or diagrams associated with this text.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff88cebe2-352c-470f-b6e0-51493d9d8ad6%2F31946ede-7ee1-4f71-8a0b-12fea84e2e96%2Fsb4iu9k_processed.png&w=3840&q=75)
Transcribed Image Text:### Problem Statement
**Calculate the moles of Ca²⁺ in the 10.00 ml sample.**
(See equation 1 in the procedure)
Your answer should have 4 sig figs.
**Answer:**
[Text box for answer input]
### Explanation
In this task, you are required to determine the amount of calcium ions (Ca²⁺) present in a given 10.00 ml sample. To solve this, you will refer to "equation 1 in the procedure," a part of your experimental or textbook instructions that presumably provides the necessary formula or ratio for calculation. Ensure your final answer includes four significant figures for precision.
There are no graphs or diagrams associated with this text.
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