🤓 Based on our data, we think this question is relevant for Professor Siler's class at OREGONSTATE.

We are being asked to calculate the equilibrium constant, K_{p} for the given equilibrium reaction:

**X _{2}(g) ⇌ 2X(g)**

**When dealing with equilibrium and K _{p}:**

•**K _{p}**→ equilibrium units are in terms of pressure

•

$\overline{){{\mathbf{K}}}_{{\mathbf{p}}}{\mathbf{=}}\frac{\mathbf{products}}{\mathbf{reactants}}}$

▪ **only gaseous species** are included in the equilibrium expression

▪ the **coefficient** of each compound in the reaction equation will be the **exponent **of the concentrations in the equilibrium expression

**Given: **

**Initial Concentrations:**

**P _{X}_{2}** = 1.75 atm

**In order to calculate the equilibrium concentrations of species, we need to use an ****ICE Chart. **

**Given values at equilibrium:**

P_{total} = 2.75 atm

**Calculate ****x:**

${\mathit{P}}_{\mathbf{t}\mathbf{o}\mathbf{t}\mathbf{a}\mathbf{l}\mathbf{}}\mathbf{=}\mathbf{}{\mathit{P}}_{{\mathbf{X}}_{\mathbf{2}}}\mathbf{}\mathbf{+}{\mathit{P}}_{\mathbf{X}}\phantom{\rule{0ex}{0ex}}\mathbf{2}\mathbf{.}\mathbf{75}\mathbf{=}\mathbf{}\mathbf{1}\mathbf{.}\mathbf{75}\mathbf{-}\mathit{x}\mathbf{}\mathbf{+}\mathbf{2}\mathbf{x}\phantom{\rule{0ex}{0ex}}\mathbf{2}\mathbf{.}\mathbf{75}\mathbf{=}\mathbf{}\mathbf{1}\mathbf{.}\mathbf{75}\mathbf{}\mathbf{+}\mathbf{}\mathbf{x}\phantom{\rule{0ex}{0ex}}\mathbf{}\mathbf{x}\mathbf{}\mathbf{=}\mathbf{}\mathbf{2}\mathbf{.}\mathbf{75}\mathbf{}\mathbf{-}\mathbf{}\mathbf{1}\mathbf{.}\mathbf{75}$

**x = 1.00 atm**

**We can now ****calculate the equilibrium constant, K _{p}:**

** ****X _{2}(g) ⇌ 2X(g)**

The reaction X_{2}(g) ⇌ 2X(g) occurs in a closed reaction vessel at constant volume and temperature. Initially, the vessel contains only X_{2} at a pressure of 1.75 atm. After the reaction reaches equilibrium, the total pressure is 2.75 atm.

What is the value of the equilibrium constant, K_{p}, for the reaction?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the ICE Chart concept. You can view video lessons to learn ICE Chart. Or if you need more ICE Chart practice, you can also practice ICE Chart practice problems.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Siler's class at OREGONSTATE.