(a) Interpretation: The total number of the molecules present in the system after 10 molecules of NH 3 and 10 molecules of O 2 take part in the complete reaction should be calculated. Concept Introduction: It is important to recognize that the coefficients in a balanced equation give the relative number of molecules. Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers. If the stoichiometric quantities of two reactants is not same in a reaction, it is important to determine the limiting and excess reactant to calculate the correct amount (in mass) of products formed.

BuyFind

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
BuyFind

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

Solutions

Chapter 9, Problem 91AP
Interpretation Introduction

(a)

Interpretation:

The total number of the molecules present in the system after 10 molecules of NH3 and 10 molecules of O2 take part in the complete reaction should be calculated.

Concept Introduction:

It is important to recognize that the coefficients in a balanced equation give the relative number of molecules.

Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers.

If the stoichiometric quantities of two reactants is not same in a reaction, it is important to determine the limiting and excess reactant to calculate the correct amount (in mass) of products formed.

Interpretation Introduction

(b)

Interpretation:

Making use of the microscopic pictures, the total molecules present inside the container after the reaction occurs should be determined.

Concept Introduction:

It is important to recognize that the coefficients in a balanced equation give the relative number of molecules.

Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers.

If the stoichiometric quantities of two reactants is not same in a reaction, it is important to determine the limiting and excess reactant to calculate the correct amount (in mass) of products formed.

Interpretation Introduction

(c)

Interpretation:

The mass of NO(g) in grams present in the container after the reaction occurs should be calculated.

Concept Introduction:

It is important to recognize that the coefficients in a balanced equation give the relative number of molecules.

Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers.

If the reactants are not mixed in stoichiometric quantities in any stoichiometry problem, it is important to determine the limiting reactant to calculate the correct amount of product formed in the reaction. This reagent which is celled the limiting reactant is an essential factor in determining the number of products formed or reactants used whenever reactants are not mixed in stoichiometric quantities.

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