
Interpretation:
The empirical formula of the compound is to be calculated.
Concept introduction:
The number of moles is defined as the ratio of mass to the molar mass:
Here,
Molar mass is calculated by adding the masses of each element multiplied by their number of atoms present (given in subscript). Its S.I. unit is
The mass of compound can be calculated as
Here,
the Mass of carbon can be calculated as
The mass of hydrogen can be calculated as

Answer to Problem 154AP
Solution: The empirical formula of the first compound is
Explanation of Solution
Given information:
For gasoline
For methyl tert-butyl ether
The molar mass of
Calculate the number of moles of water as
Substitute
The molar mass of
Calculate the number of moles of carbon dioxide as
Substitute
The molar mass of
For carbon in
Calculate the mass of carbon as
Substitute
The molar mass of
For hydrogen in
Calculate the mass of hydrogen as
Substitute
The mass of the given sample is
Calculate the mass of lead as
Substitute
Rearrange the above equation for
Now, the number of moles of each element is to be calculated as
The molar mass of
Calculate the number of moles of carbon as
Substitute
The molar mass of hydrogen is
Calculate the mass of hydrogen as
Substitute
The molar mass of lead is
Calculate the mass of lead as
Substitute
So, the molecular formula of the compound can be written as
As the empirical formula are always has whole number multiples, on simplifying the number of moles of each element, it is calculated as
For H
For C
For Pb
So, the empirical formula of the compound is
Now, for tert-butyl ether:
The molar mass of
Calculate the number of moles of water as
Substitute
The molar mass of
Calculate the number of moles of carbon dioxide as
Substitute
The molar mass of
For carbon in
Calculate the mass of carbon as
Substitute
The molar mass of
For hydrogen in
Calculate the mass of hydrogen as
Substitute
The mass of the given sample is
Calculate the mass of oxygen as
Substitute
Rearrange the above equation for
Now, the number of moles of each element is to be calculated as
The molar mass of carbon is
Calculate the mass of carbon as
Substitute
The molar mass of hydrogen is
Calculate the mass of hydrogen as
Substitute
The molar mass of oxygen is
Calculate the mass of oxygen as
Substitute
So, the molecular formula of the compound is
As the empirical formula are always whole number multiples, on simplifying the number of moles of each element, it is calculated as
For H
For C
For O
So, the empirical formula of the compound is
The empirical formula of the first compound is
Want to see more full solutions like this?
Chapter 3 Solutions
Chemistry
- 8:17 PM Sun Mar 30 Draw the major product of this reaction. Ignore inorganic byproducts. HSCH2CH2CH2SH, BF3 Probler Drawing Ato Bonds Clarrow_forwardpresented by Mr L How the coprion. (Il Done in no wraction, dew the starting redential) доarrow_forward8:16 PM Sun Mar 30 K Draw the major product of this reaction. Ignore inorganic byproducts. Proble 1. CH3MgBr 2. H3O+ F Drawingarrow_forward
- о но оarrow_forwardName the major organic product of the following action of 4-chloro-4-methyl-1-pentanol in neutral pollution 10+ Now the product. The product has a molecular formula f b. In a singly hain, the starting, material again converts into a secule with the molecular kormula CIO. but with comply Draw the major organic structure inhalationarrow_forwardMacmillan Learning Alcohols can be oxidized by chromic acid derivatives. One such reagent is pyridinium chlorochromate, (C,H,NH*)(CICTO3), commonly known as PCC. Draw the proposed (neutral) intermediate and the organic product in the oxidation of 1-butanol by PCC when carried out in an anhydrous solvent such as CH₂C₁₂. PCC Intermediate OH CH2Cl2 Draw the intermediate. Select Draw Templates More с H Cr о Product Draw the product. Erase Select Draw Templates More H о Erasearrow_forward
- If I have 1-bromopropene, to obtain compound A, I have to add NaOH and another compound. Indicate which compound that would be. A C6H5 CH3arrow_forwardProvide the reagents for the following reactions.arrow_forwardIf I have 1-bromopropene, to obtain compound Z, I have to add two compounds A1 and A2. Indicate which compounds are needed. P(C6H5)3arrow_forward
- Draw the major product of this reaction. Ignore inorganic byproducts. Assume that the water side product is continuously removed to drive the reaction toward products. O CH3CH2NH2, TSOH Select to Draw >arrow_forwardPredict the major organic product(s) for the following reaction.arrow_forwardPredict the major organic product(s) for the following reactions.arrow_forward
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning





