Ch.10 - Molecular Shapes & Valence Bond TheoryWorksheetSee all chapters
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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Lidocaine, discovered in 1946 is often used today by dentists to cause localized numbing. Its structure is shown below. How many pi and sigma bonds are contained in lidocaine's structure?A. 4 pi, 39 sigmaB. 4 pi, 18 sigmaC. 3 pi, 39 sigmaD. 3 pi, 18 sigmaE. 6 pi, 48 sigma

Problem

Lidocaine, discovered in 1946 is often used today by dentists to cause localized numbing. Its structure is shown below. How many pi and sigma bonds are contained in lidocaine's structure?

A. 4 pi, 39 sigma

B. 4 pi, 18 sigma

C. 3 pi, 39 sigma

D. 3 pi, 18 sigma

E. 6 pi, 48 sigma


Solution

We’re being asked the number of σ and π bonds in Lidocaine. 


Sigma (σ) bonds are the single bonds in molecules. Also, recall that a double bond is composed of 1 σ bond and 1 π bond and a triple bond is composed of 1 σ bond and 2 π bonds


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