Assign formal charges to each carbon atom in the given species. All lone pairs have been drawn in. H H | нН — Са— Съ H H

Draw the molecules in Problem 1.61 using line structures

A oxygen with one single bond and three lone pairs is a neutral oxygen an oxonium ion with formal charge -1 an oxyanion ion with formal charge -1 an oxyanion with formal charge +1 an oxonium ion with formal charge +1

CO3²- Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure. To change the symbol of an atom, double-click on the atom, and enter the letter of the new atom.

MOLECULES Drawing a skeletal structure from a Lewis structure Convert the Lewis structure below into a skeletal structure. H H-C-H H :0: || -N-C=ċ-c-0-C-H H Н-С—С- H H Н—С—Н Н H

Convert the condensed formula CH, CH(OH)CH(CH₂), into a Lewis structure (including all lone pair electrons). Click and drag to start drawing a structure. KU с с X 5 c

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name dimethyl ether iodomethane acetic acid compound formula or Lewis structure H T H-C-Ö-C-H I H HILIA CH₂I | H H :O: | || H-C-C-O-H Between molecules of the compound? O yes O no O yes O no hydrogen-bonding force O yes O no Between molecules of the compound and molecules of water? O yes Ono O yes O no O yes O no X S

Draw one of the resonance structures for the hydrogen sulfate anion (HSO4−) . Include nonbonding electrons and formal charges where necessary. Do not draw resonance arrows.

Following the rule that each atom of carbon, oxygen, and nitrogen reacts to achieve a complete outer shell of eight valence electrons, add unshared pairs of electrons as necessary to complete the valence shell of each atom in these ions. Then assign formal charges as appropriate.

Use this condensed chemical structure to complete the table below. CH, — С — О — С — CH, The condensed chemical structure of acetic anhydride Some facts about the acetic anhydride molecule: number of carbon-carbon single (C - C) bonds: number of carbon-hydrogen single (C - H) bonds: number of lone pairs: