4 Solubility and... 18.3 Gibbs Free E E OKINETICS AND EQUILIBRIUM Calculating equilibrium composition from an equilibrium constant Suppose a 250. mL flask is filled with 1.2 mol of Cl₂ and 0.60 mol of HCI. The following reaction becomes possible: H₂(g) + Cl₂(g) 2HCl (g) The equilibrium constant K for this reaction is 0.409 at the temperature of the flask. Calculate the equilibrium molarity of H₂. Round your answer to two decimal places. M X 5

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# Calculating Equilibrium Composition from an Equilibrium Constant

## Kinetics and Equilibrium

**Scenario:**

Suppose a 250. mL flask is filled with 1.2 mol of Cl₂ and 0.60 mol of HCl. The following reaction becomes possible:

\[ \text{H}_2(g) + \text{Cl}_2(g) \rightarrow 2\text{HCl}(g) \]

The equilibrium constant \( K \) for this reaction is 0.409 at the temperature of the flask.

**Task:**

Calculate the equilibrium molarity of \( \text{H}_2 \). Round your answer to two decimal places.

**Interactive Section:**

- Input box for molarity \( \text{(M)} \)
- Option to Check the answer
- Explanation button for hints or detailed solutions

**Additional Notes:**

- Ensure calculations consider the volume of the flask when determining molarity.
- Use ICE tables if necessary to organize initial concentrations, changes, and equilibrium concentrations. 

This task helps reinforce understanding of chemical equilibrium, reaction stoichiometry, and the use of equilibrium constants in calculations.
Transcribed Image Text:# Calculating Equilibrium Composition from an Equilibrium Constant ## Kinetics and Equilibrium **Scenario:** Suppose a 250. mL flask is filled with 1.2 mol of Cl₂ and 0.60 mol of HCl. The following reaction becomes possible: \[ \text{H}_2(g) + \text{Cl}_2(g) \rightarrow 2\text{HCl}(g) \] The equilibrium constant \( K \) for this reaction is 0.409 at the temperature of the flask. **Task:** Calculate the equilibrium molarity of \( \text{H}_2 \). Round your answer to two decimal places. **Interactive Section:** - Input box for molarity \( \text{(M)} \) - Option to Check the answer - Explanation button for hints or detailed solutions **Additional Notes:** - Ensure calculations consider the volume of the flask when determining molarity. - Use ICE tables if necessary to organize initial concentrations, changes, and equilibrium concentrations. This task helps reinforce understanding of chemical equilibrium, reaction stoichiometry, and the use of equilibrium constants in calculations.
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