preview topics alors 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) The number of lines exhibited by hydrogen(s) a isel The number of lines exhibited by hydrogen(s) bis 2 The number of lines exhibited by hydrogen(s) cis 2) 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) cis 2