Determining Molecular Formulas from Percent Composition Steps 1-3 Assume you have a 100-g sample and determine the amount of

Question

Determining Molecular Formulas from Percent Composition
Steps 1-3
Assume you have a 100-g sample and determine the amount of each element in 100 g of the compound.
Steps 4-5
Find the ratios of amounts of each element to the smallest amount.
Step 6
Use the ratios to determine the empirical formula.
Step 7
Determine the molar mass of the empirical formula.
Step 8
Determine the ratio of the molar masses of the compound and of the empirical formula. This ratio is the number of empirical formula units in the molecule.
Step 9
Multiply the number of atoms of each element in the empirical formula units by the ratio found in the preceding step.
An organic acid is composed of carbon (68.84%), hydrogen (4.96%), and oxygen (26.20%). Its molar mass is 122.12 g/mol. Determine the molecular formula of the compound.

Kunduz · Accepted Answer

Click to see the answer