Chapter 15, Problem 64GQ

(a)

Interpretation Introduction

Interpretation:

The given system is in equilibrium or not has to be identified and if not the direction in which the reaction proceed has to be given.

Concept Introduction:

Reaction Quotient: For a general reaction in non-equilibrium system:

$\begin{array}{l}\text{aA}{}_{\text{(g)}}\text{+}{\text{bB}}_{\text{(g)}}\rightleftarrows \text{cC}{}_{\text{(g)}}\text{+}\text{dD}{}_{\text{(g)}}\\ {\text{Q}}_{\text{C}}\text{=}\frac{{\left[\text{C}\right]}^{\text{c}}\text{×}{\left[\text{D}\right]}^{\text{d}}}{{\left[\text{A}\right]}^{\text{a}}\text{×}{\left[\text{B}\right]}^{\text{b}}}\\ {\text{Q}}_{\text{C}}\text{may}\text{or}\text{may}\text{not}\text{be}\text{equal}\text{to}\text{the}\text{equilibrium}\text{constant,}{\text{K}}_{\text{C}}\end{array}$

Significance of reaction quotient:

If $\begin{array}{l}\text{Q}\text{=}\text{K}\text{-}\text{system}\text{is}\text{in}\text{equilibrium}\text{.}\\ \text{Q}\text{>}\text{K}\text{-}\text{system}\text{shifts}\text{to}\text{left}\text{forming}\text{reactants}\text{.}\\ \text{Q}\text{<}\text{K}\text{-}\text{system}\text{shifts}\text{to}\text{right}\text{forming}\text{products}\text{.}\end{array}$

(b)

Interpretation Introduction

Interpretation:

The concentration of product increase or decrease if the temperature increases has to be identified.

Concept Introduction:

Significance of reaction quotient:

If

$\begin{array}{l}\text{Q}\text{=}\text{K}\text{-}\text{system}\text{is}\text{in}\text{equilibrium}\text{.}\\ \text{Q}\text{>}\text{K}\text{-}\text{system}\text{shifts}\text{to}\text{left}\text{forming}\text{reactants}\text{.}\\ \text{Q}\text{<}\text{K}\text{-}\text{system}\text{shifts}\text{to}\text{right}\text{forming}\text{products}\text{.}\end{array}$