# Using Le Chatelier's Principle to Predict the Effect of Changes**Kinetics and Equilibrium**In this scenario, acetylene and oxygen react to form carbon dioxide and water through the following chemical equation:\[ 2 \text{C}_2\text{H}_2 (g) + 5 \text{O}_2 (g) \rightarrow 4 \text{CO}_2 (g) + 2 \text{H}_2\text{O} (g) \]A mixture of \(\text{C}_2\text{H}_2\), \(\text{O}_2\), \(\text{CO}_2\), and \(\text{H}_2\text{O}\) reaches equilibrium in a closed reaction vessel. You are tasked with predicting how certain disturbances (perturbations) will affect the composition of the mixture in the vessel and determining whether the equilibrium will shift to the right or left, or remain unchanged.## Table: Effects of Perturbations on Equilibrium| **Perturbation** | **Change in Composition** | **Shift in Equilibrium** ||----------------------------|-----------------------------------|--------------------------|| **Some \(\text{H}_2\text{O}\) is removed.** | The pressure of \(\text{C}_2\text{H}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] The pressure of \(\text{O}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] | \(\leftarrow\) \text{to the right} \[\circ\] \text{to the left} \[\circ\] \text{(none)} || **Some \(\text{C}_2\text{H}_2\) is added.** | The pressure of \(\text{O}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] The pressure of \(\text{CO}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] | \(\rightarrow\) \text

Acetylene and oxygen react to form carbon dioxide and water, like this: 2C₂H₂(g) +50₂ (g) → 4CO₂(g) + 2H₂O(g) Suppose a mixture of C₂H₂, O₂, CO₂ and H₂O has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation Some H₂O is removed. Some C₂H₂ is added. change in composition The pressure of C₂H₂ will The pressure of O₂ will The pressure of O₂ will The pressure of CO₂ will ? ? ? ? ? go up. go down. not change. shift in equilibrium to the right X O to the left O (none) O to the right O to the left O (none) 5

Acetylene and oxygen react to form carbon dioxide and water, like this: 2C₂H₂(g) +50₂ (g) → 4CO₂(g) + 2H₂O(g) Suppose a mixture of C₂H₂, O₂, CO₂ and H₂O has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation Some H₂O is removed. Some C₂H₂ is added. change in composition The pressure of C₂H₂ will The pressure of O₂ will The pressure of O₂ will The pressure of CO₂ will ? ? ? ? ? go up. go down. not change. shift in equilibrium to the right X O to the left O (none) O to the right O to the left O (none) 5

Chemistry

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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

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Question

# Using Le Chatelier's Principle to Predict the Effect of Changes

**Kinetics and Equilibrium**

In this scenario, acetylene and oxygen react to form carbon dioxide and water through the following chemical equation:

\[ 2 \text{C}_2\text{H}_2 (g) + 5 \text{O}_2 (g) \rightarrow 4 \text{CO}_2 (g) + 2 \text{H}_2\text{O} (g) \]

A mixture of \(\text{C}_2\text{H}_2\), \(\text{O}_2\), \(\text{CO}_2\), and \(\text{H}_2\text{O}\) reaches equilibrium in a closed reaction vessel. You are tasked with predicting how certain disturbances (perturbations) will affect the composition of the mixture in the vessel and determining whether the equilibrium will shift to the right or left, or remain unchanged.

## Table: Effects of Perturbations on Equilibrium

| **Perturbation** | **Change in Composition** | **Shift in Equilibrium** |
|----------------------------|-----------------------------------|--------------------------|
| **Some \(\text{H}_2\text{O}\) is removed.** | The pressure of \(\text{C}_2\text{H}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] The pressure of \(\text{O}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] | \(\leftarrow\) \text{to the right} \[\circ\] \text{to the left} \[\circ\] \text{(none)} |
| **Some \(\text{C}_2\text{H}_2\) is added.** | The pressure of \(\text{O}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] The pressure of \(\text{CO}_2\) will: \[ \downarrow \text{Option: } \text{go up, go down, not change} \] | \(\rightarrow\) \text

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