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Chapter 13: Q68E (page 554)

Question: Peroxyacetyl nitrate, or PAN, is present in photochemical smog. Draw Lewis structures (including resonance forms) for PAN. The skeletal arrangement is

Short Answer

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Answer

PAN is a secondary pollutant. This is a thermally unstable molecule. The following diagrams are the structures of the molecule.

Step by step solution

01

 Drawing the lewis structure 

The PAN molecule has two pi bonds with 11 lone pairs. N atom has a positive charge as shown. The negative charge is on one of the O atoms of the N-O bond.

02

 Drawing the resonance structure 

N atom shows resonance with all-around O atoms. This makes the molecule more stable.

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Most popular questions from this chapter

Question:Consider the following bond lengths: C–O is 1.43 Å, C=O is 1.23 Å, and C≡O 1.09 Å In theion, all three C-O bonds have identical bond lengths of 1.36 Å. Why?

Consider the following Lewis structure, where E is an unknown element:

What are some possible identities for element E? Predict the molecular structure (including bond angles) for this ion. (See Exercises 97 and 98.)

Consider the following Lewis structure, where E is an unknown element.

What are some possible identities for element E? Predict the molecular structure (including bond angles) for this ion.

Question: Acetic acid is responsible for the sour taste of vinegar. It can be manufactured using the following reaction:CH3OH (g) + CO (g) CH3COOH (l)Use tabulated values of bond energies (Table 13.6) to estimate 𝛥H for this reaction. Compare this result to the 𝛥H value calculated using standard enthalpies of formation in Appendix 4. Explain any discrepancies.

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