Exam 2: Polar Covalent Bonds;acids and Bases

Exhibit 2-1 Give the corresponding letter of the term that best matches the given definition. -_____ The ability of an atom to attract the shared electrons in a covalent bond.

Which of the following substances has a zero dipole moment?

Exhibit 2-3 Phenylalanine is an amino acid that is essential to human nutrition.The representation below shows the structure of phenylalanine at physiological pH.Consider this structure to answer the following question(s). -Refer to Exhibit 2-3.Assign any formal charges to atoms in this representation of phenylalanine.

Exhibit 2-3 Phenylalanine is an amino acid that is essential to human nutrition.The representation below shows the structure of phenylalanine at physiological pH.Consider this structure to answer the following question(s). -Refer to Exhibit 2-3.The oxygen atom labeled B.has _____ bonding electrons.

​Draw the resonance forms of 3,5-heptanedione anion. ​

Exhibit 2-9 Indole is pleasant smelling in highly dilute solutions and has been used in perfumery.Use the structure of indole,below,to answer the following question(s). -Refer to Exhibit 2-9.Indole can function as a Lewis base in the presence of strong acid.Formulate a reaction,showing electron flow with arrows,that demonstrates this reactivity of indole.

Exhibit 2-6 Refer to the following equation to answer the question(s) below.Place the letter corresponding to the correct answer in the blank. -Refer to Exhibit 2-6.The strongest Brønsted-Lowry acid in the equation is ______.

Exhibit 2-6 Refer to the following equation to answer the question(s) below.Place the letter corresponding to the correct answer in the blank. -Refer to Exhibit 2-6.Will this reaction take place as written? Explain.

Draw two resonance structures for the species below.

Use the curved arrow formalism to show the electron flow in the reaction of ammonia with water.

Exhibit 2-10 Consider the acid-base reaction below to answer the following question(s). -Refer to Exhibit 2-10.Using the curved arrow formalism,show the flow of electrons for this reaction.

Exhibit 2-10 Consider the acid-base reaction below to answer the following question(s). -Refer to Exhibit 2-10.Write the products of this Lewis acid - base reaction.

Draw two resonance structures for the species below.

Exhibit 2-1 Give the corresponding letter of the term that best matches the given definition. -_____ A bond between two atoms differing in electronegativity by < 0.5.

Exhibit 2-4 Use the convention and the crossed arrow to show the direction of the expected polarity of the indicated bonds in the following compounds. -Refer to Exhibit 2-4.The C−F bond in fluorobenzene,

The following is generic depiction of a reaction using the curve arrow formalism. Which of these statements is not correct for this reaction?

The following is a representation of the pain reliever,acetaminophen,the active ingredient in Tylenol .Indicate the positions of any multiple bonds.Atoms other than carbon and hydrogen are labeled.

Exhibit 2-4 Use the convention and the crossed arrow to show the direction of the expected polarity of the indicated bonds in the following compounds. -Refer to Exhibit 2-4.The C−Si bond in tetramethylsilane, (CH₃)₄Si

Which of the following would represent the strongest acid?

Put a box around all the Lewis acids in the group of compounds below.