Chemistry 2210 Summer 2023 Exam 1 PDF

Chemistry 2210 Summer 2023 Exam 1 Name (Please Print): ________________________________________________________ Before beginning, please sign the pledge below: “I pledge that I have given nor received any unauthorized assistance in the completion of this work. I agree that the a...

Chemistry 2210 Summer 2023 Exam 1 Name (Please Print): ________________________________________________________ Before beginning, please sign the pledge below: “I pledge that I have given nor received any unauthorized assistance in the completion of this work. I agree that the answers submitted on this exam are my own work. I agree NOT to discuss any component of this exam with students that will take this exam in the future. I understand that if I am caught cheating (defined as dishonest behavior during the exam or discussing the exam with students that have not yet taken the test) I will receive a grade of 0 and will be referred to Student Affairs” Signature: __________________________________________________________________________ You will not receive credit for this work if you do not sign and date this pledge!!!!!! Your exam grade will become an immediate zero!!!!! YOU MUST PRESENT YOUR PANTHER ID TO INORDER TO TURN IN THE EXAM!!!!! Your exam grade will become an immediate zero!!!!! Chemistry 2210 Summer 2023 Exam 1 I. Multiple Choice (20 Questions, 5 pts. each, 100 points total) Choose the best answer for each of the following questions. Record your answer on the Akindi bubble sheet provided. 1) What is the formal charge of nitrogen in the following structure? a) +2 b) +1 c) 0 d) -1 e) -2 2) Which of the following is not a plausible resonance structure for compound I? a) A b) B c) C d) D Chemistry 2210 Summer 2023 Exam 1 3) What is the hybridization of the indicated atom in the following structure? a) sp3 b) sp2 c) sp d) sp2d2 4) Which of the following is the best, correct Lewis Structure for CH2C(CH3)CH2CH3? a) b) c) d) Chemistry 2210 Summer 2023 Exam 1 5) Is the indicated functional group primary, secondary or tertiary? a) primary b) secondary c) tertiary 6) What functional group is located at the indicated point in the structure below? a) aldehyde b) ketone c) ester d) ether e) acid 7) Which of the following underlined atoms does not obey the octet rule? a. CH4 b. B(CH3)3 c. H2O d. F2 Chemistry 2210 Summer 2023 Exam 1 8) Which of the following compounds contain an ionic bond? Atom Electronegativity F 4.0 O 3.5 N 3.0 Br 2.8 S 2.5 Na 0.9 a. Br2 b. NO2 c. SO3 d. NaF 9) How many pi bonds are there in the following substance? a. 2 b. 3 c. 4 d. 5 Chemistry 2210 Summer 2023 Exam 1 10) The C4-C5 carbon-carbon bond in the following molecule results from the overlap of which orbitals (in the order C3-C4)? o 7 5 3 1 6 4 2 a) sp–sp2 b) sp–sp3 c) sp2–sp2 d) sp2–sp3 e) sp3–sp2 11) What is the hybridization of the N atom in the following molecule? N+ a) sp3 b) sp2 c) sp d) s e) p 12) Which of the following is NOT an acid - conjugate base pair (in that order)? a) H3PO4, H2PO4– b) HBF4, BF4– c) CH3CH2OH, CH3CH2O– d) H3O+, H2O e) HPO42–, H2PO4– Chemistry 2210 Summer 2023 Exam 1 13) Which of these is not a true statement? a) All Lewis bases are electron pair donors. b) All Lewis acids contain an acid hydrogen. c) All Bronsted-Lowry acids contain hydrogen. d) All Lewis acids are electron deficient. 14) Which of the following organic compounds is the strongest acid? a). C6H12 pKa = 52 b). CH3CH3 pKa = 50 c). CH3CH2OH pKa = 18 d). CH3CO2H pKa = 5 e). CF3CO2H pKa = 0 15) Which of the following organic compounds would have the strongest conjugate base (most reactive)? a). CH3CH2OH pKa = 18 b). CH3CH3 pKa = 50 c). C6H12 pKa = 52 d). CH3CO2H pKa = 5 e). CF3CO2H pKa = 0 Chemistry 2210 Summer 2023 Exam 1 16) Which compound is a ketone? a) O C OH H b) O CH3CCH2CH3 c) O HCOCH3 d) H3C CH OH H3C Chemistry 2210 Summer 2023 Exam 1 17) The compound below is an adrenocortical hormone called cortisone. What functional group is not present in cortisone? OH O O OH O a) alcohol b) Ketone c) Carboxylic acid d) Alkene e) a, b and d 18) Which compounds are tertiary amines? NH2 A) NH2 B) H N C) N D) E) “A” and “B” Chemistry 2210 Summer 2023 Exam 1 19) What is the conjugate base of the following alcohol (CH3CH2OH2+)? a) CH3CH2O– b) CH3CH2CH2O- c) CH3CH2OH d) CH3CH3 e) CH3OCH3 20) For the equilibrium the two substances which are both bases are: CH 3NH 3+ + H 2O CH 3NH 2 + H 3O + a) H2O and H3O+ b) CH3NH3+ and H2O c) CH3NH3+ and CH3NH2 d) CH3NH3+ and H3O+ e) H2O and CH3NH2 Chemistry 2210 Summer 2023 Exam 1 Periodic Table of the Elements