Experiment 18-Pre-Lab Assignment Name: 1. Ozone, 03, is present in earth's atmosphere and absorbs UV radiation. a. Draw the Lewis structure for O3. Show formal charges for all atoms and include any possible resonance structures. b. Determine the VSEPR geometries for O3. Electronic Geometry: Molecular Geometry: 2. Draw the Lewis structures for (a) C2H6, (b) C2H40, and (c) CH5N. Show formal charges for all atoms and determine the VSEPR geometries for each. a. C2Н6 Electronic Geometry for C1: Electronic Geometry for C2: Molecular Geometry for C1: Molecular Geometry for C2: b. C2H40 Electronic Geometry for C1: Electronic Geometry for C2: Molecular Geometry for C1: Molecular Geometry for C2: C. CH5N Electronic Geometry for C: Electronic Geometry for N: Molecular Geometry for C: Molecular Geometry for N: 18-27

1) Use e- to complete octets and draw skeleton for H2O2 a. Subtract 2 e- for each bond in the skeleton.  b. Determine the formal charges for every atom in the molecule.

LO-2 6. Based on experimental data, the molecular structure of sulfuric acid (H2SO4) can be described as follows. 142 pm- -157 pm 157 pm- 142 pm Sulfur Oxygen Hydrogen a) Draw the Lewis structure of H2SO4 to be consistent with the experimental data. b) If we do not have any experimental data, we can determine the correct structure with the highest stability by calculating format charge. Determine the format charge of all atoms in the Lewis strucure of sulfuric acid you draw.

POST-LABORATORY QUESTIONS Due after Laboratory Experiment 1. Thiocyanate, SCN, has three possible structures a. Draw the resonance structures of thiocyanate, SCN- b. Assign the formal charge of each atom in each of the three resonance structures. On the basis of the formal charges and the electronegativities, identify the major resonance structure. с. Duour tho LOuris dot structure for each of the following molecules or ions. Determine

KINDLY ANSWER ALL THE FOLLOWING QUESTIONS GIVEN FROM NUMBERS 7 TO 11. To help me supplement my understanding of the topic. Thank you so much!

can someone explain how Molecule B has a tertiary carbon ? Im having troubl with secondary and tertiary i tried to calculate the formal charges thinking that may have something to do with it but I ended up getting the wrong formal charge for molecule B, so now I'm confused.

Determine if the structural formula below is an acceptable Lewis structures for organic compounds. Point out the problems in cases where structure is invalid. :0: CH3 CH-C-Ö-CH–CH3 A. This is not the correct Lewis structure. B. No, All atoms do not have a zero formal charge, therefore this is not the correct Lewis structure. C. All atoms have a zero formal charge, therefore this is the correct Lewis structure. D. Oxygen has a formal charge of 1+.

Questions 6a, b, c, d is linked to one another and focus on the molecule shown below. H ба) Before we can start assigning hybridization, we need to correctly assign our VSEPR electron-pair geometries to each central atom. For each of the chosen central atom, match it with it's corresponding electron-pair geometry. Drag and drop options on the right-hand side and submit. For keyboard navigation. SHOW MORE V C1 trigonal planar c C2 linear O N1 tetrahedral C trigonal pyramidal N 01 tetrahedral N trigonal planar o Bent O tetrahedral O :0: :0= II II I-0 - -I I-z: I

1. What is the formal charge on N in this ion? (Show your work) :0: || 2. Consider the molecule below. Determine the atomic geometry at each of the 2 labeled| carbons. H „CH3 H 3. Draw the best Lewis structure for ICI.. 4. Thionyl chloride is used as an oxidizing and chlorinating agent in organic chemistry. Draw the best Lewis structure for SOCI. 5. Draw a Lewis structure for XeOs in which all formal charges are zero. 6. If a 500mL solution of 5.34M Potassium nitrate, KNO:, is to be prepared, how many grams must be weighed out? (show your work) (MW 101.1 g/mole) 7. Progesterone is a sex hormone that is comprised of 80.21% C, 9.62% H, and 10.18% O. Determine the empirical formula of progesterone 8. Why is H-C=N: a better representation than H-N=C: for hydrogen cyanide?

Draw Lewis structures and assign formal charges for the following compounds and ions. Note any resonance forms and explain which resonance form is the most important. Make a note of any other unusual features (such as "this one doesn't work" and why- what are the shortcomings of the model.) CO3²- CO NO₂ CNO (include isomers) Al₂Cl6 B₂H6 O2 (paramagnetic) H3O+ LiF IF7