Chapter 18, Problem 18.23QP

Interpretation Introduction

Interpretation:

$Kp$ value has to be calculated at $25°C$ for the given equilibrium reaction.

Concept Introduction:

Enthalpy change: The change in enthalpy is that accompanies the formation of one mole of the compound in its normal state from its constituent elements in their standard state.

Free energy$({\text{ΔG}}^0)$: The entropy is second law of thermodynamics it indicated for $({\text{ΔG}}^0)$ symbol, the many of chemical reactions cause changes in entropy and it plays an important role in determining which direction (forward and backward) a chemical reaction spontaneously proceeds.

Kp:  The equilibrium constant calculated from the partial pressures of a reaction equation.  It is used to express the relationship between product pressures and reactant pressures.  It is unites number, although it relates the pressures.