Chapter 7, Problem 89CP

Interpretation Introduction

Interpretation : The empirical and molecular formulas should be calculated.

Concept Introduction : For any compound the empirical formula represents the lowest whole number ratio of atoms in a compound.

Molecular formula = small integer x empirical formula

Grams or moles of each element can be used to calculate the empirical formula of compound.

The following steps should be followed to get the empirical formula:

1. Calculate the number of moles for each element.

2. Divide by smallest number of moles.

3. Write the empirical formula with the help of whole number of step-2.

4. Calculate the integer value with the help of molar mass

5. Write the molecular formula.