Question

Splitting of a signal in a proton NMR spectrum tells us the number of chemically non-equivalent hydrogens in the immediate vicinity of the hydrogen giving the signal. Predict the number of lines exhibited by hydrogens at the labeled positions in a first- order NMR spectrum. (Make the approximation that all coupling constants are equal.) 1) \о осн" The number of lines exhibited by hydrogen(s) a is 2 The number of lines exhibited by hydrogen(s) bis 7 The number of lines exhibited by hydrogen(s) e is 1 2) bi a OH The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by hydrogen(s) b is The number of lines exhibited by hydrogen(s) e is Submit Answer Retry Entire Group 5 more group attempts remaining

Answer 1

Answer) Splitting of signals n NMR based where, h nomber o4 neighbouing paoton (nti) aule On a b 1) C O-c си И,с 2 lines, Chnti)= 2, as n=1 a) st will exihubit b) gt will exihibit c) Jt will exihibut lines Cnt , as n=6 Cnti) -1, as hO 2) I1 b MO a 3 lines 6 lines, Cnti) 6 Cnt) a) st will exhibit bgt will exhibit c gt will exhibit Cnt)3 as h- 2 n=5 as 3 line -3, as n 2