   Chapter 2, Problem 85PS

Chapter
Section
Textbook Problem

Complete the following table: (a)

Interpretation Introduction

Interpretation:

The table of empirical formula, molar mass and molecular formula are needed to be completed for the given respective molecules.

Concept introduction:

• Empirical formula of a compound represents the smallest whole number relative ratio of elements in that compound.
• Equation for finding Molecular formula from the empirical formula,

Molecular formula=MolarmassEmpiricalformula mass × Empirical formula

• Equation for number moles from mass and molar mass,

Numberofmoles=MassingramsMolarmass

Explanation

For the given empirical formula CH,

The empirical formula mass of compound is 13.01g

The molar mass of compound is 26g.

Equation for finding Molecular formula from the empirical formula,

Molecular formula=MolarmassEmpiricalformula mass

(b)

Interpretation Introduction

Interpretation:

The table of empirical formula, molar mass and molecular formula are needed to be completed for the given molecule.

Concept introduction:

• Empirical formula of a compound represents the smallest whole number relative ratio of elements in that compound.
• Equation for finding Molecular formula from the empirical formula,

Molecular formula=MolarmassEmpiricalformula mass × Empirical formula

• Equation for number moles from mass and molar mass,

Numberofmoles=MassingramsMolarmass

(c)

Interpretation Introduction

Interpretation:

The table of empirical formula, molar mass and molecular formula are needed to be completed for the given molecule.

Concept introduction:

• Empirical formula of a compound represents the smallest whole number relative ratio of elements in that compound.
• Equation for finding Molecular formula from the empirical formula,

Molecular formula=MolarmassEmpiricalformula mass × Empirical formula

• Equation for number moles from mass and molar mass,

Numberofmoles=MassingramsMolarmass

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