With reference to structure A, label structure B as an identical compound, a constitutional isomer, a resonance structure, or none of the above. Select the single best answer. H OY Resonance structure O Identical compound Constitutional isomer None of the above. H B
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- 1. An experimental technique called ¹3C-Nuclear Magnetic Resonance Spectroscopy allows chemists to tell how many different kinds of carbon there are in a molecule and whether carbons are primary (1°), secondary (2°), tertiary (3°), or quaternary (4°). Give dash (Kekule) structures (i.e., use lines for electron pair bonds) for the following compounds having a molecular formula C6H12. Also, on each structure, identify carbons as 1º, 2º, 3º, 4º; tell how many different kinds of C's there are; and designate which C's are equivalent. a) A compound having only single bonds and only secondary carbons. b) A compound having only single bonds and primary, secondary, and tertiary carbons. c) A compound having only single bonds and only primary, secondary, and quaternary carbons. d) A compound having only single bonds and primary, secondary, tertiary, and quaternary carbons.J of Br G K OH Br H L OCH 3 of 1 M OH NH (i) Compound H is an example of what functional group? Select alternative (ii) Compound G is classified as a: Select alternative ✓. (iii) Which compound has all carbons sp2 hybridised? Select alternative ✓ (iv) Which two compounds in Table 1 are constitutional isomers? Select alternative (v) Which statement best describes the stereochemistry of compo G? Select alternative (vi) Which compound in Table 1 is the MOST polar? Select alternative (vii) What is the systematic (IUPAC) name of compound G? Select alternative (viii) Which compounds will have MORE than 4 signals in their 13C NMR spectra? Select alternative (ix) Which electrophile from Table 1 will react fastest in an SN1 reaction? Select alternative (x) How many constitutionally isomeric alkenes will be formed when compound L reacts with NaOH? Select alternative (xi) Which compound(s) from Table 1 can be used to form a Grignard reagent? Select alternative (xii) Which functional groups can be…Using the information provided below, deduce the identity of the compound IV. What is the IUPAC name of compound IV? ... II AICI3 V 1) O3 [H+], CH3NH2 NABH;CN (C10H12) 2) DMS (C9H100) (C10H15N) -H20 1) EtMgBr 2) H20 IV (C11H160) (A 2-phenyl-2-propanone B 3-phenyl-3-pentanol c) none of these D 1-phenyl-3-pentanol E 1-phenyl-1-propanone
- Draw the structure of the following three isomeric esters with chemical formula C-H₁2O₂- Ester #1: methyl cyclopentanecarboxylate cyclopropanecarboxylate Ester #2: propyl Ester # 3: ethyl cyclobutanecarboxylate • Consider E/Z stereochemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate structures with + signs from the drop-down menu. **** ChemDoodleⓇ n [F 13Please help with 4c, 4d, and 4e. We havent learned kaw of equivalents so please do 4c a different way. thank youCalculate the enthalpy (AHº) of the following CH3CH₂CH3 + Br₂ CH3CH₂CH₂Br + HBr a + Br₂ + HCI CI Br O-H + HBr -
- Write structural formula for the following compound Q) C4H8Cl2: d 1.60 (d, 3H), 2.15 (m, 2H), 3.72 (t, 2H), and 4.27 (m, 1H)1) Consider the following 5 compounds: NH2 H3C- NHh = white Cos H=red NH2 NH2 NH2 COOH H- -COOH COOH H3C čOOH NH2 čOOH H3C H- -NH2 ČOOH II II H3C H NH2 COOH H, COOH H3C. COOH NH2 NH2 COOH NH2 IV Indicate which of the following TWO structures are described by the following (use all ten a. possible combinations, +&4, I & II, &-V, 1& V, I & I,tt&V, H&V, II & IV, II & V, V-& Identical:+V, Enantiomers: | V,1-11 Diastereomers: lIV IV, N V b. Indicate which of the above compounds WILL rotate plane polarized light when dissolved in solution by writing their Roman numeral(s) here.• -- H (b) H,C 3-methylhexane CH, (c) B கூ CH, CH, HgCG; சீகூ H₂CH H 3-ethyl-1-methyloctane 3,3 diethyl pentane 5Å, Å,CH, W CH3 CH2 CH₂ W21 Su2... CH3 X -CH3 G b F E L c
- Determine whether the following pairs of structures are actually different compounds or simply resonance forms of the same compounds. 1-41 0 0 and and (b) (a) O +0-H O 0-H and and (d) +NH₂ 0 NH₂ CH,-!-H + (e) CH₂=C H and CH₂-CH (Đ) CH–C−NH, and CH3–C=NH, + (g) CH₂=CH-CH₂ and CH₂-CH=CH₂ (h) CH₂=C=0 and H=C=C—OH Ο Η 0 H 0 H +O-H (i)/H-C-C-H and H-C=C-H (j) H-C-H and H¬C-H g H H O- 유 0 « -l- + (k) H-C-NH₂ and H-C=NH₂ (1) CH₂-C-CH=CH₂ and CH₂-C=CH-CH₂4. Two compounds A and B isolated from plants have the following chemical data. Determine the their structures from the data provided (and give the structures of their derivative C) A H2 C 1. Оз C15H28 А, С15Н24 C15H24 Pd/C H 2. NaHSO3 В H2 C H. C15H24 Pd/C C15H28 A HBr Br 1. Оз В, С15Н24 C15H24 2. NaHSO3 В Br HBr C15H24(30) Take a look at the two multi-substituted benzene compounds below. Trinitrotoluene (TNT) has its NO, groups on carbons 2, 4, and 6. Which of the two fits this numerical scheme? Hint: Toluene is a special name for benzene whose primary functional group is a methyl group substituted in place of one of its hydrogens. CH3 CH3 O,N. ZON O,N NO2 NO2 NO2