Chapter 9, Problem 20PE

(a)

Interpretation Introduction

Interpretation:

The product formed from the reaction has to be given and the limiting agent has to be given.

The reaction is,

Figure 1

Concept Introduction:

The limiting reactant of the reaction is the reactant that is completely used during the reaction.  Using the mole ratio and starting amounts of the reactants limiting reactant can be determined.

Example:

Consider a reaction starts with $\text{30}{\text{g CaCO}}_{\text{3}}\text{\&}\text{11}\text{g}\text{HCl}\text{.}$  The values in grams has to be converted to moles by dividing with their molecular weights.  According to the mole ratio $\text{0}\text{.3}\text{g}$ of calcium carbonate require $\text{0}\text{.6}\text{g}$ of $\text{HCl}$ completely.  Therefore, HCl is the limiting agent.

(b)

Interpretation Introduction

Interpretation:

The product formed from the reaction has to be given and also the limiting agent has to be given.

The reaction is,

Figure 3

Concept Introduction:

Refer to part (a).