The number of hydrogens present in Loratadine, C 22 H ? ClN 2 O 2 , which has four rings and eight double bonds. Concept introduction: Each ring or a double bond in a molecule corresponds to a loss of two hydrogens from the formula of alkane . Hence two hydrogens are to be added for each to arrive at the molecular formula of the parent alkane. Further, if the molecular formula of a compound contains halogens, oxygen and/or nitrogen, then the number of halogens is to be subtracted from the number of hydrogens, the number of oxygens to be ignored and number of the nitrogens is to be added to the number of hydrogens, in arriving at the number of hydrogens. To determine: The number of hydrogens present in loratadine, C 22 H ? ClN 2 O 2 , which has four rings and eight double bonds.

Question

Your chemistry professor draws a number of molecules on the board: (1) CH4 ; (2) H2C=CH2 ; (3) H2C=C=CH2 ; and (4) H2C=C=C=CH2. You muse about all the molecules that chemists draw on a two-dimensional board and wonder which ones are actually planar, existing basically as they appear on the board, and which ones are not plane but rather three-dimensional. Answer the following questions. What is the geometry and hybridization of the carbon in CH4? What is the geometry and hybridization of each central carbon atom in the remaining molecules? Draw each molecule showing the bonds and identify each bond in all the molecules as s or p. What are the specific orbital overlaps (i.e., sp3-sp3) that are in each of the molecules? What are the bond angles for each central atom in each molecule? Which molecules are planar and which are non-planar?

Answer 1

Question

Chapter 7.SE, Problem 36AP

Interpretation Introduction

Interpretation:

The number of hydrogens present in Loratadine, C₂₂H_?ClN₂O₂, which has four rings and eight double bonds.

Concept introduction:

Each ring or a double bond in a molecule corresponds to a loss of two hydrogens from the formula of alkane. Hence two hydrogens are to be added for each to arrive at the molecular formula of the parent alkane. Further, if the molecular formula of a compound contains halogens, oxygen and/or nitrogen, then the number of halogens is to be subtracted from the number of hydrogens, the number of oxygens to be ignored and number of the nitrogens is to be added to the number of hydrogens, in arriving at the number of hydrogens.

To determine:

The number of hydrogens present in loratadine, C₂₂H_?ClN₂O₂, which has four rings and eight double bonds.

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