{"id":31124,"date":"2018-02-20T23:50:30","date_gmt":"2018-02-20T23:50:30","guid":{"rendered":"https:\/\/writemyessayfree.com\/organic-chemistry-2"},"modified":"2017-08-16T05:59:11","modified_gmt":"2017-08-16T05:59:11","slug":"organic-chemistry-2","status":"publish","type":"post","link":"https:\/\/www.benedictsol.com\/blogs\/organic-chemistry-2\/","title":{"rendered":"Organic Chemistry"},"content":{"rendered":"<div class=\"the_content_wrapper\">\n<p>Organic Chemistry<\/p>\n<p>I need a clear step by step solution for this worksheet. for example : the answer is 2.2, how did you get the answer ?\u00c2 <\/p>\n<p> \u201cPractice exam questions\u201d for the Midterm Exam<br \/> Unit 1<br \/> 1. What is the degree of unsaturation for a compound whose molecular formula is C14H17NOS? 2. What is the wavenumber (with appropriate units) of radiation that <\/p>\n<p>has a frequency of 9.96 x 1013 Hz?<br \/> 3. What is the frequency (with appropriate units) of radiation that has a corresponding wavenumber of 12000 cm-1?<br \/> 4. Which one of the following statements is correct? Please check ( ) your selection.<br \/> B<br \/> P(CH3)2<br \/> A Si(CH3)3<br \/> ! The IR absorption band due to bond A will be more intense than the IR absorption band due to bond B ! The IR absorption band due to bond A will be less intense than <\/p>\n<p>the IR absorption band due to bond B<br \/> 5. Which one of the following statements is correct? Please check ( ) your selection. ! The absorption band due to a C=Si bond occurs at a smaller wavenumber than <\/p>\n<p>the absorption band due to a C=Ge bond ! The absorption band due to a C=Si bond occurs at a larger wavenumber than the absorption band due to a C=Ge bond<br \/> 6. Draw a plausible structure for a compound whose molecular formula is C7H10O that is consistent with the information provided below. Bromine test positive Complete <\/p>\n<p>set of IR absorption bands 2992 cm-1 (sharp, medium) 1705 cm-1 (sharp, strong) 1642 cm-1 (sharp, medium)<br \/> 7. The molecular formula of compound C is C5H8. IR data for compound C is provided below. Treatment of compound C with excess hydrogen gas (in the presence of a <\/p>\n<p>suitable metal catalyst) gives a compound whose molecular formula is C5H10. Draw a plausible structure for compound C.<br \/> Complete set of IR absorption bands 3004 cm-1 (sharp, medium) 2993 cm-1 (sharp, medium) 1681 cm-1 (sharp, medium)<br \/> 3 of 17 | P a g e<br \/> 8. The molecular formula of compound D is C6H10. IR data for compound D is provided below. Draw a plausible structure for compound D.<br \/> Complete set of IR absorption bands 3305 cm-1 (sharp, medium) 2997 cm-1 (sharp, medium) 2191 cm-1 (sharp, weak)<br \/> 9. The molecular formula of compound E is C7H10O2. IR data for compound E is provided below. Draw a plausible structure for compound E. Bromine test Positive <\/p>\n<p>Complete set of IR absorption bands 3005 cm-1 (sharp, medium) 2918 cm-1 (sharp, medium) 1709 cm-1 (sharp, strong) 1653 cm-1 (sharp, medium) 1243 cm-1 (sharp, strong) <\/p>\n<p>1054 cm-1 (sharp, strong)<br \/> 10. The molecular formula of compound F is C10H11NO. IR data for compound F is provided below. Draw a plausible structure for compound F. Bromine test Negative <\/p>\n<p>Complete set of IR absorption bands 3302 cm-1 (broad, strong) 3008 cm-1 (sharp, medium) 2994 cm-1 (sharp, medium) 2210 cm-1 (sharp, medium) 1501 cm-1 (sharp, medium) <\/p>\n<p>1247 cm-1 (sharp, medium)<br \/> Unit 2<br \/> 1. A signal has been reported to occur 5000 Hz downfield from TMS in an NMR spectrometer operating at 500 MHz. What is the chemical shift (with appropriate units) of <\/p>\n<p>this signal on the delta scale?<br \/> 2. Which of the following statements are correct? Please check ( ) your selection.<br \/> a) b)<br \/> H O CH3 Br H CH3 H<br \/> H<br \/> CH3<br \/> ! The circle protons are chemically equivalent ! The circle protons are not chemically equivalent<br \/> ! The circle protons are chemically equivalent ! The circle protons are not chemically equivalent<br \/> 4 of 17 | P a g e<br \/> 3. For each of the following compounds label the various sets of chemically equivalent protons.<br \/> e.g.<br \/> O<br \/> H<br \/> H<br \/> H<br \/> 4. Using the approach\/notation\/data presented in lecture what are the predicted chemical shifts (in ppm) of the circled protons? Please show your work.<br \/> H O H<br \/> H H<br \/> O OH<br \/> NC C<br \/> S<br \/> C CCH2CH2OH<br \/> CH3O C C<br \/> OCH2CH2SH<br \/> O<br \/> 5. What type of signals (singlet, doublet, triplet, quartet, etc) will the circled protons give rise to?<br \/> O Cl CH3 H CH3<br \/> CH2Br H O<br \/> H C C C C H<br \/> OCH3<br \/> H<br \/> CH3 H<br \/> H<br \/> CH2Br<br \/> OCH3<br \/> 6. A proton NMR spectrum exhibits signals at 5.0 ppm and 9.0 ppm. The operating frequency of the spectrometer is 200 MHz. Complete the following statement with the <\/p>\n<p>appropriate numerical values.<br \/> The two peaks are separated by Hz.<br \/> The peak at ppm is more upfield than the peak at ppm.<br \/> 5 of 17 | P a g e<br \/> 7. Which one of the following statements is correct? Please check ( ) your selection.<br \/> ! Proton HC is more shielded than proton HD ! Proton HC is less shielded than proton HD ! Protons HC and HD are equally shielded<br \/> 8. Which one of the following statements is correct? Please check ( ) your selection.<br \/> ! The Beffective sensed by proton HE is smaller than the Beffective sensed by proton HF ! The Beffective sensed by proton HE is larger than the Beffective sensed by <\/p>\n<p>proton HF ! None of the above<br \/> 9. A certain segment of an unknown compound\u2019s proton NMR spectrum contains peaks K and L. Given that peak L corresponds to two protons how many protons does peak K <\/p>\n<p>correspond to?<br \/> K<br \/> L<br \/> 6 of 17 | P a g e<br \/> 10. Which compound is responsible for Spectrum A? Which compound is responsible for Spectrum B? Briefly outline your reasoning. <\/p>\n<p>7 of 17 | P a g e<br \/> 11. Which compound is responsible for Spectrum C? Which compound is responsible for Spectrum D? Briefly outline your reasoning. <\/p>\n<p>8 of 17 | P a g e<br \/> 12. Which compound is responsible for Spectrum E? Which compound is responsible for Spectrum F? Briefly outline your reasoning.<br \/> S<br \/> S<br \/> Compound Q Compound R<br \/> SPECTRUM E 6H<br \/> 2H 3H<br \/> 3H<br \/> 3H<br \/> 1H<br \/> 8 7 6 5 4 3 2 1 0 PPM<br \/> 9 of 17 | P a g e<br \/> SPECTRUM F 3H<br \/> 6H<br \/> 3H<br \/> 3H<br \/> 2H<br \/> 1H<br \/> 8 7 6<br \/> 5 4 PPM<br \/> septet 3 2 1 0<br \/> 10 of 17 | P a g e<br \/> 13. Which compound is responsible for Spectrum J? Which compound is responsible for Spectrum K? Briefly outline your reasoning.<br \/> N N<br \/> Compound S Compound T<br \/> SPECTRUM J 6H<br \/> 3H 3H<br \/> 3H<br \/> 2H<br \/> 4H<br \/> 1H 1H 1H 1H<br \/> 8 7 6 5 4 3 2 1 0 PPM<br \/> octet<br \/> 11 of 17 | P a g e<br \/> SPECTRUM K<br \/> doublet (6H)<br \/> triplet (3H)<br \/> 3H<br \/> 1H 1H<br \/> 2H 4H 2H<br \/> 2H<br \/> 1H<br \/> 8 7 6 5 4 PPM<br \/> 3 2 1 0<br \/> octet<br \/> 12 of 17 | P a g e<br \/> 14. Which one of the following statements is correct?<br \/> ! Spectra I, II and III are due to compounds U, V and W respectively ! Spectra I, II and III are due to compounds U, W and V respectively ! Spectra I, II and III are <\/p>\n<p>due to compounds V, U and W respectively ! Spectra I, II and III are due to compounds V, W and U respectively ! Spectra I, II and III are due to compounds W, U and V <\/p>\n<p>respectively ! Spectra I, II and III are due to compounds W, V and U respectively<br \/> N<br \/> N<br \/> N<br \/> Compound U Compound V Compound W<br \/> SPECTRUM I 6H<br \/> 2 quartets (2H each)<br \/> 2 triplets (3H each)<br \/> 3H (phenyl protons)<br \/> 8 7 6 5 4 3 2 1 0 PPM<br \/> 13 of 17 | P a g e<br \/> SPECTRUM II 6H<br \/> 3H<br \/> 6H<br \/> 3H (phenyl protons)<br \/> 1H (septet)<br \/> 8 7 6 5 4 3 2 1 0 PPM<br \/> SPECTRUM III 6H<br \/> 6H<br \/> 3H (phenyl protons) 4H<br \/> 7 6 5 4 3 2 1 0 PPM<br \/> 14 of 17 | P a g e<br \/> Unit 3<br \/> 1. Draw the major organic product(s) of the following reactions. Don\u2019t forget to use wedge\/dash notation where appropriate. If no reaction is expected write NR.<br \/> i.<br \/> CH3 D2O<br \/> H C<br \/> CH3<br \/> CH2MgBr CH3CH2CH2OH<br \/> ii.<br \/> Br 1. Mg, dry diethyl ether, heat<br \/> CH3<br \/> 2. H2O<br \/> 2. Draw the major organic product(s) of the following reactions. Don\u2019t forget to use wedge\/dash notation where appropriate. If no reaction is expected write NR.<br \/> i.<br \/> Cl + Mg<br \/> dry diethyl ether,<br \/> heat<br \/> ii.<br \/> CH2MgBr<br \/> CH3<br \/> C CH<br \/> dry THF<br \/> 3. Give a balanced chemical equation, with appropriate solvent, for the preparations of the following compounds.<br \/> CH2Li MgCl<br \/> 15 of 17 | P a g e<br \/> Unit 4<br \/> 1. Draw the major organic product(s) of the following reactions. Please be careful to use wedge\/dash notation where appropriate. If no reaction is expected write <\/p>\n<p>NR.<br \/> i.<br \/> HO H<br \/> PCl3, pyridine<br \/> ii.<br \/> OH<br \/> CH3<br \/> CH3 H2SO4, heat<br \/> 2. Draw the major organic product(s) of the following reactions. Please be careful to use wedge\/dash notation where appropriate. If no reaction is expected write <\/p>\n<p>NR.<br \/> i.<br \/> MsCl, pyridine<br \/> OH<br \/> ii.<br \/> OH<br \/> HBr<br \/> 3. Draw the major organic product(s) of the following reactions. Please be careful to use wedge\/dash notation where appropriate. If no reaction is expected write <\/p>\n<p>NR.<br \/> i.<br \/> OH PCC, dry CH2Cl2<br \/> ii.<br \/> HCl<br \/> OH<br \/> 16 of 17 | P a g e<br \/> 4. Draw the major organic product(s) of the following reactions. Please be careful to use wedge\/dash notation where appropriate. If no reaction is expected write <\/p>\n<p>NR.<br \/> i.<br \/> O<br \/> OH<br \/> H3C S Cl O<br \/> OH<br \/> (1 mole)<br \/> (1 mole)<br \/> in pyridine<br \/> ii.<br \/> H2SO4, heat<br \/> OH<br \/> 5. Provide the structures of compounds A and B in the spaces provided below. Please be careful to use wedge\/dash notation where appropriate.<br \/> OH<br \/> PBr3, pyridine<br \/> NaCN, A B DMSO, heat<br \/> 6. Draw the major organic product(s) of the following reactions. Please be careful to use wedge\/dash notation where appropriate. If no reaction is expected write <\/p>\n<p>NR.<br \/> i.<br \/> O<br \/> H aqueous H2CrO4<br \/> ii.<br \/> CH3 C OH<br \/> H2SO4, heat<br \/> CH3<br \/> 17 of 17 | P a g e<br \/> 7. Draw the major organic product(s) of the following reactions. Please be careful to use wedge\/dash notation where appropriate. If no reaction is expected write <\/p>\n<p>NR.<br \/> i.<br \/> CH3CH2CH2OH<br \/> ii.<br \/> HBr<br \/> OH<br \/> excess aq H2CrO4<br \/> HO<br \/> 8. Which one of the following statements is correct?<br \/> H N N<br \/> C D<br \/> ! Compound D arose from the oxidation of compound C ! Compound D arose from the reduction of compound C ! The conversion of compound C to compound D did not involve a <\/p>\n<p>redox reaction<br \/> 9. Which one of the following statements is correct?<br \/> O O<br \/> H CH3<br \/> E F<br \/> ! Compound F arose from the oxidation of compound E ! Compound F arose from the reduction of compound E ! The conversion of compound E to compound F did not involve a <\/p>\n<p>redox reaction <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Organic Chemistry I need a clear step by step solution for this worksheet. for example : the answer is 2.2, how did you get the answer ?\u00c2 \u201cPractice exam questions\u201d for the Midterm Exam Unit 1 1. What is the <a href=\"https:\/\/www.benedictsol.com\/blogs\/organic-chemistry-2\/\" class=\"read-more\">Read More &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-31124","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts\/31124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/comments?post=31124"}],"version-history":[{"count":0,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts\/31124\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/media?parent=31124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/categories?post=31124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/tags?post=31124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}