According to Table C .2, what is the value of the equilibrium constant for the reaction (1)

Name: Problem 43, Chapter 7: Physical Chemistry
Uploaded: 2020-05-23T01:40:18-08:00
Duration: 2 min 45 s
Channel: Ahmed Ali
Description: According to Table C .2, what is the value of the equilibrium constant for the reaction (1)/(2)H2(g)+AgCl(s)=Ag(s)+H^+(ao)+Cl^-(ao) at 25^∘ C and how is it defined?

step 1 Hello everyone my name is Ahmed Ali in this question we want to calculate the K equilibrium to c

According to Table C .2, what is the value of the...

According to Table $\mathrm{C} .2,$ what is the value of the equilibrium constant for the reaction \[ \frac{1}{2} \mathrm{H}_{2}(\mathrm{g})+\mathrm{AgCl}(\mathrm{s})=\mathrm{Ag}(\mathrm{s})+\mathrm{H}^{+}(\mathrm{ao})+\mathrm{Cl}^{-}(\mathrm{ao}) \] at $25^{\circ} \mathrm{C}$ and how is it defined?

According to Table $\mathrm{C} .2,$ what is the value of the equilibrium constant for the reaction
\[
\frac{1}{2} \mathrm{H}_{2}(\mathrm{g})+\mathrm{AgCl}(\mathrm{s})=\mathrm{Ag}(\mathrm{s})+\mathrm{H}^{+}(\mathrm{ao})+\mathrm{Cl}^{-}(\mathrm{ao})
\]
at $25^{\circ} \mathrm{C}$ and how is it defined?

Key Concepts

Heterogeneous Equilibrium

This concept applies to reactions involving more than one phase (such as gases, aqueous solutions, and solids). In the definition of the equilibrium constant for such systems, species in their pure states (solids or liquids) are omitted because their activities are defined as one. This simplifies the equilibrium expression, focusing only on the phases that can vary in concentration.

Relationship Between Equilibrium Constant and Gibbs Free Energy

There is a fundamental thermodynamic connection between the equilibrium constant and the standard Gibbs free energy change (?G°) of a reaction, given by the equation ?G° = -RT ln K. This relationship indicates how the position of equilibrium is influenced by the free energy differences between reactants and products, and in turn, by temperature.

Equilibrium Constant

This concept refers to a number that quantifies the relative amounts of products and reactants present at equilibrium. It is defined as the ratio of the activities (or effective concentrations) of the products to those of the reactants, with each raised to the power of its stoichiometric coefficient. In heterogeneous equilibria, the activities of pure solids and liquids are taken as unity.

Activity and Standard States

Activities represent the effective concentrations of chemical species in a reaction, based on their actual concentrations and non-ideal behavior. They are measured relative to a standard state (commonly 1 M for solutes and 1 atm for gases) which provides a reference point for establishing the numerical value of the equilibrium constant.

Transcript

Please give Ace some feedback