[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-348168-105":59,"doc-detail-348168-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","nmr-practice-solutions-problem-set-25iiia","NMR Practice Solutions - Problem Set 25IIIA","","This document provides detailed solutions to chemistry problems focused on spectral analysis, specifically interpretation of IR and 1H NMR spectra for molecular structures. It includes step-by-step assignments of spectral peaks, splitting pattern predictions, and chemical shift calculations for compounds with specific molecular formulas such as C5H10O2. The content serves as a valuable study aid for students learning organic chemistry, offering clear examples of how to verify molecular structures through empirical spectral data.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/nmr-practice-solutions-problem-set-25iiia/348168/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/nmr-practice-solutions-problem-set-25iiia/348168.png","ImageObject",300,407,{"name":92,"@type":93},"Lucas Martin","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-24","2026-09-22",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does the IR peak at 1741 cm-1 indicate?","Question",{"text":112,"@type":113},"The intense peak at 1741 cm-1 is characteristic of a carbonyl group (C=O), likely within an ester functional group given the surrounding data.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How are the splitting patterns for the protons determined in the NMR spectrum?",{"text":117,"@type":113},"Splitting patterns (e.g., doublet, triplet, sextet) are determined by the n+1 rule, based on the number of neighboring non-equivalent protons present on adjacent carbons.",{"name":119,"@type":110,"acceptedAnswer":120},"Why is the chemical shift for proton 'd' at 3.8 ppm?",{"text":121,"@type":113},"The signal at 3.8 ppm is deshielded due to its proximity to the electronegative oxygen atom of the ester group, characteristic of methoxy protons in a methyl ester.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},348168,1790650768,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":19,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":52,"preview_page_count":4},8796095360427,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","Problem 1:Provide a structure of a compound having a molecular formula of C₅H₁₀Oz that is consistent with the following spectra.SHOW your work and assign all elevant peaks in the IR and'HNMR spectra.To confirm your choice,predict the splitting patternsfor the protons in your proposed structure and estimate and/or calculate their chemical shifts.  \nliuld upla baten alt elates  \n3H  \nProblem 2:Provide a structure of a compound having a molecular formula of C₇H₈O that is consistent with the following spectra.SНОW your work and assgn al reevan peaks i telR aпаН ММК зрестга То сопПтп уоur choie predсtШе sрШшпд рапегпзlor the protons iп уоиг ргорosed structure and estmate andor calculate ten chemical shihs.  \nResoAscc skuctaes shousTAtHa,He,÷Hdwill bc shelded(Qowsuppu UAuc)  \n# ProProblem3:Providea structureof a compoundhaving a molecular formula ofC₆H₆H₁₂O that is consistent with the following spectra.SHOW your work andassigssign all relevant peaks in the IR,H NMR,and ¹³C NMR spectra.To confirmyourour choice,predict the splitting patterns for the protons in your proposedstructructure and estimate and/or calculate their chemical shifts.otH/dd /3hsg② /d5-5.3C1H/dd5-5,32H/tS=1,.21△COR)+A(R)1、2.+=3.3  /ecotc S=1.2+A(R)+△(R)=1.0+oto=1.22H/szx+ctS=1.8+ACR)+△CP)1.x+=1.2⑨3t0.9\n\nPeoblen Cca)  \n1t。“-  \nCS  \nHois cisb HcHois geu to Ha4-15H² th心  比T sfolb刀k到k hmpMngHCHHHb petin gHa5gnA(HHHais gen toH is C15 + HHa is tensto HHc is k2ss + Ha  \nIL-IBHe-aH\u003CCo-5He,","cbCaip3W5lSDVLRq","https://ap.wps.com/l/cbCaip3W5lSDVLRq","pdf",390464,"English","# Problem 1 - Structural Analysis\n## Spectral Interpretation and Assignments\n# Problem 2 - C7H8O Structure Determination\n# Problem 3 - Spectral Data for C6H12O","[{\"question\":\"What does the IR peak at 1741 cm-1 indicate?\",\"answer\":\"The intense peak at 1741 cm-1 is characteristic of a carbonyl group (C=O), likely within an ester functional group given the surrounding data.\"},{\"question\":\"How are the splitting patterns for the protons determined in the NMR spectrum?\",\"answer\":\"Splitting patterns (e.g., doublet, triplet, sextet) are determined by the n+1 rule, based on the number of neighboring non-equivalent protons present on adjacent carbons.\"},{\"question\":\"Why is the chemical shift for proton 'd' at 3.8 ppm?\",\"answer\":\"The signal at 3.8 ppm is deshielded due to its proximity to the electronegative oxygen atom of the ester group, characteristic of methoxy protons in a methyl ester.\"}]","NMR Practice Solutions - Problem Set 25IIIA | PDF",1790071479]