Chapter 15, Problem 15.149MP

Interpretation Introduction

(a)

Interpretation:

The partial pressures of ${\text{WBr}}_{\text{4}}\left(\text{g}\right)$ near the wall of the bulb needs to be determined.

Concept introduction:

A general equilibrium reaction can be written as follows:

$aA+bB\rightleftharpoons cC+dD$

For a general reaction, the expression for K_c can be represented as follows:

$K_c=\frac{{\left[C\right]}^c{\left[D\right]}^d}{{\left[A\right]}^a{\left[B\right]}^b}$

It can also be written in the form of the partial pressure of all the gases as follows:

$K_p=\frac{{\left(P_C\right)}^c{\left(P_D\right)}^d}{{\left(P_A\right)}^a{\left(P_B\right)}^b}$

Interpretation Introduction

(b)

Interpretation:

The nature of the heat reaction needs to be determined.

Concept introduction:

The heat of reaction is also termed as enthalpy of reaction. It is the change in the enthalpy of chemical reaction that occurs at a fixed or constant pressure. 

The heat of reaction/enthalpy of reaction is a thermodynamic unit of measurement, which is useful for computing the amount/total of energy per mole either produced or released in a chemical reaction.

The reaction is said to be endothermic when the heat of reaction sign is positive and for a negative sign, it is said to be exothermic.

Force exerted by the gas is termed as partial pressure. It helps to predict the movement of gases. In gases, molecules get diffuse, react or dissolve because of partial pressure.

Interpretation Introduction

(c)

Interpretation:

It is to be shown that the heat reaction will move in the reverse direction.

Concept introduction:

The heat of reaction is also termed as enthalpy of reaction. It is the change in the enthalpy of chemical reaction that occurs at a fixed or constant pressure. 

The heat of reaction/enthalpy of reaction is a thermodynamic unit of measurement, which is useful for computing the amount/total of energy per mole either produced or released in a chemical reaction.

The reaction is said to be endothermic when the heat of reaction sign is positive and for a negative sign, it is said to be exothermic.

Force exerted by the gas is termed as partial pressure. It helps to predict the movement of gases. In gases, molecules get diffuse, react or dissolve because of partial pressure.