In a closed system at high temperatures, the reactants and products are in equilibrium. CaCO 3 s → CaO s + CO 2 g . Explain the meaning of the term closed system.

Closed system is defined as it can exchange only energy with its surroundings, not matter. In a closed system at high temperatures, the reactants and products are in equilibrium. CaCO 3 s → CaO s + CO 2 g .

In a closed system at high temperature, the reactants and products are in equilibrium. CaCO 3 s → CaO s + CO 2 g . Explain, in terms of entropy changes, what happens when the pressure on this system is increased.

The pressure on the system increases, a negative contribution is made to the change in entropy(It is a measure of how much the energy of atoms and molecules become more spread out in a process). If we increase the pressure on the system, the volume decreases. The energies of the particles are in a smaller space, so they are less spread out.

In a closed system at high temperatures, the reactants and products are in equilibrium. CaCO 3 s → CaO s + CO 2 g . What is the value of the standard total entropy change at equilibrium?

Given, In a closed system at high temperatures, the reactants and products are in equilibrium. CaCO 3 s → CaO s + CO 2 g . At the position of equilibrium, the total entropy change of the forward reaction equals the total entropy change of the backward reaction, and under standard conditions, the overall entropy change is zero. Hence, the value of the standard total entropy change at equilibrium is also zero.

E M B I B E

Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 23 - Entropy and Gibbs Free Energy>Question

Lawrie Ryan and Roger Norris Solutions for Chapter: Entropy and Gibbs Free Energy, Exercise 9: Question

Author:Lawrie Ryan & Roger Norris

Lawrie Ryan Chemistry Solutions for Exercise - Lawrie Ryan and Roger Norris Solutions for Chapter: Entropy and Gibbs Free Energy, Exercise 9: Question

Attempt the free practice questions on Chapter 23: Entropy and Gibbs Free Energy, Exercise 9: Question with hints and solutions to strengthen your understanding. Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years) solutions are prepared by Experienced Embibe Experts.