Homework

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 is . The number of lines exhibited by hydrogen(s) b is . The number of lines exhibited by hydrogen(s) c is . 2) 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) c is 

3) 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) c is . 4) 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) c is .