CHEM 2213: Group Assignment 1 Key PDF

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Group Assignment 1 Key
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CHEM 2213: Organic Chemistry I...

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Group Assignment 1 Question #: 1 Which of the following is the correct Lewis structure for CH3OH?

✓ Question #: 2 What would the formal charge be on oxygen in the following structure?

+1 Question #: 3 How many electron pair domains does the atom indicated possess?

3 Question #: 4 Which of the following atoms is best at stabilizing positive charge and why? Carbon, ✓Nitrogen, Oxygen It’s more electropositive than oxygen, but can still have a complete octet of electrons (unlike carbon) Question #: 5 Several resonance structures can be drawn for the following species. Which atom would possess the most positive charge in the resonance hybrid?

oxygen Question #: 6 Which of the following is the correct Lewis structure for CH2Cl2?

✓ Question #: 7 What would the formal charge be on each chlorine in the following structure?

right +1, bottom 0 Question #: 8 How many electron pair domains does the atom indicated possess?

4, there is a lone pair of electrons not shown (remember formal charges) Question #: 9 Which of the following atoms is best at stabilizing negative charge and why? Carbon, Nitrogen, ✓Oxygen (most electronegative) Question #: 10 Several resonance structures can be drawn for the following species. Which atom would possess the most positive charge in the resonance hybrid?

Nitrogen Question #: 11 Which of the following is the correct Lewis structure for CH3NO2?

✓ Question #: 12 How many electron pair domains does the atom indicated possess?

4, the negative formal charge represents a lone pair of electrons Question #: 13 Which of the following atoms is worst at stabilizing positive charge and why? ✓Carbon, Nitrogen, Oxygen Less than an octet of electrons Question #: 14 Several resonance structures can be drawn for the following species. Which atom would possess the most negative charge in the resonance hybrid?

oxygen Question #: 15 Which of the following is the correct Lewis structure for CH 3OOCH3?

✓ Question #: 16 How many electron pair domains does the atom indicated possess?

3, double bond and 2 single bonds Question #: 17 Which of the following atoms is worst at stabilizing negative charge and why? ✓Carbon, Nitrogen, Oxygen Most electropositive atom Question #: 18 Several resonance structures can be drawn for the following species. Which atom would possess the most negative charge in the resonance hybrid?

carbon, the charge cannot be moved to the nitrogen through resonance Question #: 19 Which of the following is the correct Lewis structure for CH 3CSCH3?

✓ Question #: 20 How many electron pair domains does the atom indicated possess?

2, 1 single bond and 1 triple bond Question #: 21 What is the correct empirical formula for the following? C4H8Cl2 Question #: 22 What is the three-dimensional bond line formula corresponding to the following condensed formula? A. B. ✓C. Question #: 23 Identify the hybridization state for the atom indicated in the following molecules (counting electron pair domains can be useful here!): 4 EPDs, sp3 Question #: 24 What is the correct empirical formula for the following? C7H14O Question #: 25 Identify the hybridization state for the atom indicated in the following molecules (counting electron pair domains can be useful here!): 3 EPDs, sp2 Question #: 26 Which of the following pairs of structures are constitutional isomers? B.

✓A.

C. ✓D. Question #: 27 Identify the geometry for the atom indicated in the following molecules (counting electron pair domains can be useful here!):

4 EPDs, tetrahedral Question #: 28 Identify the hybridization state for the atom indicated in the following molecules (counting electron pair domains can be useful here!): 2 EPDs, sp

Question #: 29 Identify the atomic orbital containing lone pair(s) of electrons in the following molecule: 3EPDs, sp2, lone pairs go in hybrid orbitals so sp2 Question #: 30 What is the three-dimensional bond line formula corresponding to the following condensed formula? ✓B. A. C. Question #: 31 Identify the atomic orbital containing lone pair(s) of electrons in the following molecule: 4 EPDs, sp3, lone pairs are in sp3 orbitals

Question #: 32 Identify the atomic orbital containing lone pair(s) of electrons in the following molecule: lone pairs are on oxygen (2), 3 EPDs, sp2, lone pairs are in sp2 Question #: 33 What is the correct empirical formula for the following? C6H14O Question #: 34 Identify the atomic orbitals involved in the indicated bonds (multiple bonds require multiple orbitals!):

A. Csp-Nsp, Csp-Nsp, Cp-Np ✓B. Csp-Nsp, Cp-Np, Cp-Np C. Cp-Np, Cp-Np, Cp-Np Question #: 35 Identify the hybridization state for the atom indicated in the following molecules (counting electron pair domains can be useful here!):

3 EPDs, sp2 Question #: 36 Identify the atomic orbitals involved in the indicated bonds (multiple bonds require multiple orbitals!):

✓B. Csp3-Csp2 C. Csp3-Csp3 A. Csp2-Csp2 Question #: 37 Identify the atomic orbital containing lone pair(s) of electrons in the following molecule: 2 EPDs, sp, electrons are in hybrid orbitals so sp Question #: 38 Identify the atomic orbitals involved in the indicated bonds (multiple bonds require multiple orbitals!):

A. Osp-Hsp3 B. Osp2-Hsp3 ✓C. Osp3-Hs Question #: 39 What is the correct empirical formula for the following?

C6H5NO2 Question #: 40 Identify the geometry for the atom indicated in the following molecules (counting electron pair domains can be useful here!):

3 EPDs, sp2, trigonal planar...