Chapter 3, Problem 3.85P

(a)

Interpretation Introduction

Interpretation: The balanced equation for indicated reaction between ${\text{AB}}_{\text{2}}$ and ${\text{B}}_{\text{2}}$ should be written.

  

Concept introduction: Under the law of conservation of mass the total amount of reactants consumed is equal to the total amount of products formed in any balanced equation.

To balance an equation, one starts with the most complex chemical formula and then places the appropriate coefficient so as to make the stoichiometric coefficient equal on each side.

After proper adjustment of coefficient, the atoms are checked for an equal number on each side and finally, the physical states of matter are written in parenthesis.

(b)

Interpretation Introduction

Interpretation:Limiting reactant for indicated reaction between ${\text{AB}}_{\text{2}}$ and ${\text{B}}_{\text{2}}$ should be written.

  

Concept introduction: Under the law of conservation of mass the total amount of reactants consumed is equal to the total amount of products formed in any balanced equation.

To balance an equation, one starts with the most complex chemical formula and then places the appropriate coefficient so as to make the stoichiometric coefficient equal on each side.

After proper adjustment of coefficient, the atoms are checked for an equal number on each side and finally, the physical states of matter are written in parenthesis.

(c)

Interpretation Introduction

Interpretation:Moles of product made from ${\text{3 mol B}}_2$ and ${\text{5 mol AB}}_2$ should be written.

Concept introduction: Under the law of conservation of mass the total amount of reactants consumed is equal to the total amount of products formed in any balanced equation.

To balance an equation, one starts with the most complex chemical formula and then places the appropriate coefficient so as to make the stoichiometric coefficient equal on each side.

After proper adjustment of coefficient, the atoms are checked for an equal number on each side and finally, the physical states of matter are written in parenthesis.

(d)

Interpretation Introduction

Interpretation:Moles of excess reactant fromreaction of ${\text{3 mol B}}_2$ and ${\text{5 mol AB}}_2$ should be written.

Concept introduction: Under the law of conservation of mass the total amount of reactants consumed is equal to the total amount of products formed in any balanced equation.

To balance an equation, one starts with the most complex chemical formula and then places the appropriate coefficient so as to make the stoichiometric coefficient equal on each side.

After proper adjustment of coefficient, the atoms are checked for an equal number on each side and finally, the physical states of matter are written in parenthesis.