Effect of Change in Pressure and Volume on Chemical Equilibrium - Chemical Equilibrium

TL;DR

Pressure and volume changes can impact the direction of a chemical reaction in equilibrium, depending on the value of Δn.

Transcript

click the bell icon to get latest videos from equator reference in the previous lecture we have understood about the leech Atlas principle and in that case we have got to know that whenever at chemical equilibrium we apply certain kind of parameters like suppose if we are talking about pressure volume temperature concentration so if we change this ... Read More

Key Insights

• 🔇 Pressure and volume changes have a significant impact on gaseous reactions in equilibrium.
• #️⃣ Δn, the difference in the number of moles of products and reactants, determines the direction of the reaction.
• 🧘 If Δn = 0, pressure and volume changes do not affect the equilibrium position.
• 🔇 If Δn > 0, increasing pressure or decreasing volume favors the reverse reaction.
• 🔇 If Δn < 0, increasing pressure or decreasing volume favors the forward reaction.
• 🫗 Solid and liquid reactions are not affected by pressure and volume changes.
• 🐕‍🦺 Pressure and volume changes alone cannot completely convert a reaction from forward to reverse or vice versa.

Questions & Answers

Q: What effect do pressure and volume changes have on a reaction in equilibrium?

Pressure and volume changes can alter the direction of a reaction in equilibrium, depending on the value of Δn.

Q: How does Δn affect the impact of pressure and volume changes?

Δn is the difference in the number of moles of products and reactants. If Δn = 0, there is no effect. If Δn > 0, increasing pressure or decreasing volume favors the reverse reaction. If Δn < 0, increasing pressure or decreasing volume favors the forward reaction.

Q: Which reactions are predominantly affected by pressure and volume changes?

Gaseous reactions are mainly influenced by pressure and volume changes, while solid and liquid reactions are not.

Q: Can pressure and volume changes completely convert a reaction from forward to reverse?

Pressure and volume changes can favor a certain direction of a reaction, but they cannot fully convert a reaction from forward to reverse or vice versa. The equilibrium position will still be maintained.

Summary & Key Takeaways

• Pressure and volume changes can affect the direction of a reaction in equilibrium.

• The value of Δn (the difference in the number of moles of products and reactants) determines the effect of pressure and volume.

• If Δn = 0, there is no effect on the reaction. If Δn > 0, increasing pressure or decreasing volume favors the reverse reaction. If Δn < 0, increasing pressure or decreasing volume favors the forward reaction.