Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1.14, Problem 31P
Caffeine is a natural insecticide, found in the seeds and leaves of certain plants, where it kills insects that feed on the plant. Caffeine is extracted for human consumption from beans of the coffee plant, from Kola nuts, and from the leaves of tea plants. Because it stimulates the central nervous system, it temporarily prevents drowsiness. Add caffeine’s missing lone pairs to its structure.
caffeine
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Caffeine is a natural insecticide found in the seeds and leaves of certain plants, where it kills insects that feed on the plant. Caffeine is extracted for human consumption from beans of the coffee plant, from Kola nuts, and from the leaves of tea plants. Because it stimulates the central nervous system, it temporarily prevents drowsiness. Add caffeine’s missing lone pairs to its structure.
Amino acids are biological compounds with the following structure, where the R group can vary. The structure and biological function
of amino acids will be discussed in Chapter 25. Identify the lone pairs on the amino acid, assume there are no lone pairs on the R group.
NH3
O:
An amino acid
O:
N:
Chemistry
[Hint: Carbon atoms in line diagrams are where bond lines meet and are not
always written. This is similar to the exercise in the textbook.]
Shown below is the structure of a polypeptide.
There are [Select]
and [Select]
H₂N
peptide bonds in this polypeptide,
represents the peptide bond.
NH
NH₂
-NH₂
Chapter 1 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 1.1 - Oxygen has three isotopes, 16O, 17O, and 18O. The...Ch. 1.2 - Prob. 2PCh. 1.2 - How many valence electrons do chlorine, bromine,...Ch. 1.2 - Look at the relative positions of each pair of...Ch. 1.3 - a. Find potassium (K) in the periodic table and...Ch. 1.3 - Which bond is more polar?Ch. 1.3 - Which of the following has a. the most polar bond?...Ch. 1.3 - Use the symbols + and to show the direction of...Ch. 1.3 - After examining the potential maps for LiH, HF,...Ch. 1.4 - An atom with a formal charge does not necessarily...
Ch. 1.4 - Prob. 12PCh. 1.4 - a. Draw two Lewis structures for C2H6O. b. Draw...Ch. 1.4 - Draw the lone-pair electrons that are not shown in...Ch. 1.4 - Prob. 16PCh. 1.4 - Which of the atoms in the molecular models in...Ch. 1.4 - Prob. 18PCh. 1.7 - What orbitals are used to form the 10 sigma bonds...Ch. 1.9 - Put a number in each of the blanks: a. ___ s...Ch. 1.11 - Predict the approximate bond angles in a. the...Ch. 1.11 - According to the potential map for the ammonium...Ch. 1.12 - Prob. 25PCh. 1.13 - a. Predict the relative lengths and strengths of...Ch. 1.13 - Prob. 28PCh. 1.14 - Which of the bonds in a carbonoxygen double bond...Ch. 1.14 - Caffeine is a natural insecticide, found in the...Ch. 1.14 - a. What is the hybridization of each of the carbon...Ch. 1.14 - Prob. 33PCh. 1.14 - Describe the orbitals used in bonding and the bond...Ch. 1.15 - Account for the difference in the shape and color...Ch. 1.15 - Which of the following molecules would you expect...Ch. 1 - Draw a Lewis structure for each of the following...Ch. 1 - Prob. 38PCh. 1 - What is the hybridization of all the atoms (other...Ch. 1 - Prob. 40PCh. 1 - Draw the condensed structure of a compound that...Ch. 1 - Prob. 42PCh. 1 - Prob. 43PCh. 1 - Draw a Lewis structure for each of the following...Ch. 1 - Prob. 45PCh. 1 - List the bonds in order from most polar to least...Ch. 1 - What is the hybridization of the indicated atom in...Ch. 1 - Write the Kekul structure for each of the...Ch. 1 - Assign the missing formal charges.Ch. 1 - Predict the approximate bond angles for the...Ch. 1 - Prob. 51PCh. 1 - a. Which of the indicated bonds in each compound...Ch. 1 - In which orbitals are the lone pairs in nicotine?...Ch. 1 - Draw the missing lone-pair electrons and assign...Ch. 1 - Rank the following compounds from highest dipole...Ch. 1 - Prob. 56PCh. 1 - a. Which of the species have bond angles of 109.5?...Ch. 1 - Prob. 58PCh. 1 - Sodium methoxide (CH3ONa) has both ionic and...Ch. 1 - a. Why is a H 8 H bond (0.74 ) shorter than a C 8...Ch. 1 - Which compound has a larger dipole moment, CHCl3...Ch. 1 - Which compound has a longer C 8 Cl bond?Ch. 1 - Prob. 63PCh. 1 - The following compound has two isomers. One isomer...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Caffeine is the active ingredient in coffee, tea, and some carbonated beverages. Add lone pairs, as needed, to the structure of caffeine. 0: H₂C x N 0 CH3 CH3 Harrow_forwardUtilize the structure of Ibuprofen given below to determine its molecular formula. H3C CH3 OA. C13H1602 OB.CgH902 OC.C13H1802 D. C13H9O2 CH3 OHarrow_forwardMethyl isocyanate, CH3 -N= C = O, is used in the industrial synthesis of a type of pesticide and herbicide known as a carbamate. As a historical note, an industrial accident in Bhopal, India, in 1984 resulted in leakage of an unknown quantity of this chemical into the air. An estimated 200,000 people were exposed to its vapors, and over 2000 of these people died. Q.) Write a Lewis structure for methyl isocyanate and predict its bond angles. What is the hybridization of its carbonyl carbon? Of its nitrogen atom?arrow_forward
- The carbon–carbon bond length in C2H2 is 1.20 Å, that in C2H4 is 1.34 Å, and that in C2H6 is 1.53 Å. Near which of these values would you predict the bond length of C2 to lie? Is the experimentally observed value, 1.31 Å, consistent with your prediction?arrow_forwardSiHCl3 has the following shape: Are any of the bonds polar? if so, draw a crossed arrow along each polar bond. If none of them are polar, explain why not. If the whole molecule polar? if so draw a crossed arrow through the diagram to show the direction of polarity. If not, explain why.arrow_forwardDraw the correct shape of TcCl2 Are the bonds here polar? If so, draw crossed arrows along them to show the direction of polarity. If not, explain why not. Is the whole molecule polar? If so, draw a crossed arrow through the 3-dimensional structure above to show the direction of polarity. If not, explain why not.arrow_forward
- These two different C2H6O compounds are called structural (or constitutional) isomers - compounds with the same molecular formula but with different connections among their constituent atoms. If you must break and make new bonds in order to convert one structure into the other (not simply rotate the model around), then they are structural isomers. The concept of isomers is very important in organic chemistry and biochemistry. This is also another instance where condensed formulas can be very useful because they can help you distinguish two isomers apart even when you don't have models. Exercise 8) Can your models be interconverted by rotating bonds, or must the bonds be broken first? What does that mean about these two structures?arrow_forwardB. Cycloalkanes 1) Construct a model of the cyclic alkane: cyclopentane (C5H₁0). Because the five carbon atoms are locked in a ring, rotation about the single bonds is restricted; the plane of the ring a fixed geometry within the molecule. Toggle between full Lewis structures and skeletal structures by clicking the C-H tool. Model 1: Use the solid wedge tool to attach a methyl group to each of two different carbon atoms in the cyclopentane. Note the five carbons of the ring are in the plane of the paper, and the solid wedge indicates both methyls project forward, in front of the plane of the paper. Model 2: Use the solid wedge tool to attach first methyl group to one of two different carbon atoms in the cyclopentane, and use the dashed wedge tool to attach the second. Note the solid wedge indicates that one methyl projects forward, in front of the plane of the paper. The dashed wedge indicates the other methyl extends back, behind the plane of the paper. Click the broom to tidy up the…arrow_forwardDraw the 2D and the 3D Lewis structure for each molecule. You do not need to show resonance structures here. Determine the electron pair geometry (EPG), the molecular geometry (MG), the bond angle (BA) around the central atom, and the hybridization of the central or bold atom. Circle the formula of any polar molecule. For molecules with more than one central atom (e.g. CH3CH20H) give the structure around the bold atom. Molecule ЕPG Hyb (circle if 2D Lewis Structure 3D Lewis Structure MG polar) ВА CH2S GeO2 CF4arrow_forward
- One family of disinfection byproducts that result from the reaction of chloramines with natural organic matter in water are called the halomethanes. These are molecules where the hydrogen atoms in methane (CH4) have been replaced with atoms from group 7 of the periodic table (i.e. halogens). Draw and submit pictures of the Lewis structures for each of the following halomethanes: CH3Cl CCI CBrCizarrow_forwardTwo or more of your answers are incorrect. Use this condensed chemical structure to complete the table below. O || CH,=CH–C-H The condensed chemical structure of acrolein Some facts about the acrolein molecule: number of carbon-carbon single (CC) bonds: number of carbon-hydrogen single (CH) bonds: number of lone pairs: X S 2 1 4arrow_forwardStructural Isomers: In the next part you will learn a little about structural isomers and how to draw them. Structural isomers are compounds with the same molecular formula, but different bonding arrangements or connectivities. In other words, the atoms are connected in a different order. For example, there are 2 different compounds with the molecular formula C4H10. They are given below: H H-C- H -H H H HHH H- H H-C -H Η ΗΗ H H Do you see how the atoms are bonded in a different order in the 2 structures? So they are structural isomers. C3H12 Find three different molecular structures, isomers, with this formula. (Hint: Remember the C rule where every C atom needs to have 4 bonds.) C2H60 Find two different molecules with this formula. (Hint: What are the 2 ways you can C5H10 How many structural isomers can you find for this formula? (Hint: Notice that 2 H atoms have been removed. This means that there is EITHER 1 double bond OR there is a ring structure.) Try to provide at least 4…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Types of bonds; Author: Edspira;https://www.youtube.com/watch?v=Jj0V01Arebk;License: Standard YouTube License, CC-BY