monobromide, IBr. I2 (g) + Br2 (g)= 2IB1( What is the equilibrium composition of a mixture at 126°C that initially contained 2.30 x 10-3 mol each of iodine and bromine in a 5.00 L vessel? The equilibrium constant K. for this reaction at 126°C is 72.1. [I2] =

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### Equilibrium Composition of Iodine and Bromine Reaction

**Reaction Overview:**
Iodine (\(I_2\)) and bromine (\(Br_2\)) react to form iodine monobromide (\(IBr\)). The balanced chemical equation for this reaction is:

\[ I_2(g) + Br_2(g) \rightleftharpoons 2IBr(g) \]

**Problem Statement:**
Determine the equilibrium composition of a mixture at 126°C. The initial mixture contains \(2.30 \times 10^{-3}\) moles each of iodine and bromine in a 5.00 L vessel. The equilibrium constant (\(K_c\)) for this reaction at 126°C is 72.1.

**Calculate Equilibrium Concentrations:**
- \([I_2]\) =  
- \([Br_2]\) =  
- \([IBr]\) =  

Each concentration will be expressed in moles per liter (M).

Ensure you use the equilibrium constant expression for the reaction to calculate the equilibrium concentrations:

\[ K_c = \frac{[IBr]^2}{[I_2][Br_2]} \]

Use this expression along with the initial concentrations to solve for the equilibrium concentrations of each species.
Transcribed Image Text:### Equilibrium Composition of Iodine and Bromine Reaction **Reaction Overview:** Iodine (\(I_2\)) and bromine (\(Br_2\)) react to form iodine monobromide (\(IBr\)). The balanced chemical equation for this reaction is: \[ I_2(g) + Br_2(g) \rightleftharpoons 2IBr(g) \] **Problem Statement:** Determine the equilibrium composition of a mixture at 126°C. The initial mixture contains \(2.30 \times 10^{-3}\) moles each of iodine and bromine in a 5.00 L vessel. The equilibrium constant (\(K_c\)) for this reaction at 126°C is 72.1. **Calculate Equilibrium Concentrations:** - \([I_2]\) = - \([Br_2]\) = - \([IBr]\) = Each concentration will be expressed in moles per liter (M). Ensure you use the equilibrium constant expression for the reaction to calculate the equilibrium concentrations: \[ K_c = \frac{[IBr]^2}{[I_2][Br_2]} \] Use this expression along with the initial concentrations to solve for the equilibrium concentrations of each species.
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