Chapter 5, Problem 5.35E

(a)

Interpretation Introduction

Interpretation:

In gases state, the decomposition of molecule A gives B and C, the balanced chemical reaction has to be calculated.

Concept introduction:

Balancing equation:

Balanced equation is a chemical reaction in which number of atoms for each element in the reaction and the total charge are same on both reactant side and the product side.

Steps in balancing the equation

• Step 1: Write the unbalanced equation
• Step 2: Find the coefficient to balance the equation.
• The coefficient should be reduced to the smallest whole number.

(b)

Interpretation Introduction

Interpretation:

Equilibrium constant has to be calculated.

Concept introduction:

Equilibrium constant: At equilibrium the ratio of products to reactants (each raised to the power corresponding to its stoichiometric coefficient) has a constant value, K

For a general reaction,

  $\text{aA+bB}\rightleftarrows \text{cC+dD}$

$\text{Equilibrium}\text{constant}\text{K}\text{=}\frac{{\left[\text{C}\right]}^{\text{c}}{\left[\text{D}\right]}^{\text{d}}}{{\left[\text{A}\right]}^{\text{a}}{\left[\text{B}\right]}^{\text{b}}}$