When limestone (solid CaCO,) is heated, it decomposes into lime (solid CaO) and carbon dioxide gas. This is an extremely useful industrial process of great antiquity, because powdered lime mixed with water is the basis for mortar and concrete – the lime absorbs CO, from the air and turns back into hard, durable limestone. Suppose a limekiln of volume 750. L is pressurized with carbon dioxide gas to 15.1 atm, and heated to 1100. °C. When the amount of CO, has stopped changing, it is found that 4 kg of CaCO, have appeared. Calculate the pressure equilibrium constant K, this experiment suggests for the equilibrium between CaCO, and CaO at 1100. °C. Round your answer to 2 significant digits. Note for advanced students: it's possible there was some error in this experiment, and the value it suggests for K does not match the accepted value. K, = 0 Submit Assignment Continue Terms of Use | Privacy Center Accessibility 2921 McGraw Hill LLC. All Rights Reserved.

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
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### Educative Content on Limestone Decomposition

**Chemical Process:**

When limestone (solid \( \text{CaCO}_3 \)) is heated, it decomposes into lime (solid \( \text{CaO} \)) and carbon dioxide gas. This is an exceptionally useful industrial process with historical importance, as powdered lime mixed with water serves as a fundamental component in mortar and concrete—absorbing \( \text{CO}_2 \) from the air to reform hard, durable limestone.

**Experimental Scenario:**

Imagine a limekiln with a volume of 750 liters. This kiln is pressurized with carbon dioxide gas to 15.1 atm and heated to 1100°C. Once the carbon dioxide (\( \text{CO}_2 \)) level stabilizes, it's observed that 4 kg of \( \text{CaCO}_3 \) has formed.

**Task:**

Calculate the pressure equilibrium constant (\( K_p \)) based on this experiment for the equilibrium between \( \text{CaCO}_3 \) and \( \text{CaO} \) at 1100°C. Ensure your answer is rounded to two significant digits.

**Note for Advanced Students:**

There might be an error in this experiment as the value for \( K_p \) derived does not match the accepted value.

**Equation Input Box:**

- Contains a placeholder for entering the calculated value of \( K_p \).
- Options for entering exponents, clearing, or accessing help tools.

**Submit Option:**

- A "Continue" button to progress post-submission.

This concise walkthrough guides students through the calculation and conceptual understanding of chemical equilibria in a practical context.
Transcribed Image Text:### Educative Content on Limestone Decomposition **Chemical Process:** When limestone (solid \( \text{CaCO}_3 \)) is heated, it decomposes into lime (solid \( \text{CaO} \)) and carbon dioxide gas. This is an exceptionally useful industrial process with historical importance, as powdered lime mixed with water serves as a fundamental component in mortar and concrete—absorbing \( \text{CO}_2 \) from the air to reform hard, durable limestone. **Experimental Scenario:** Imagine a limekiln with a volume of 750 liters. This kiln is pressurized with carbon dioxide gas to 15.1 atm and heated to 1100°C. Once the carbon dioxide (\( \text{CO}_2 \)) level stabilizes, it's observed that 4 kg of \( \text{CaCO}_3 \) has formed. **Task:** Calculate the pressure equilibrium constant (\( K_p \)) based on this experiment for the equilibrium between \( \text{CaCO}_3 \) and \( \text{CaO} \) at 1100°C. Ensure your answer is rounded to two significant digits. **Note for Advanced Students:** There might be an error in this experiment as the value for \( K_p \) derived does not match the accepted value. **Equation Input Box:** - Contains a placeholder for entering the calculated value of \( K_p \). - Options for entering exponents, clearing, or accessing help tools. **Submit Option:** - A "Continue" button to progress post-submission. This concise walkthrough guides students through the calculation and conceptual understanding of chemical equilibria in a practical context.
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