Which bond is more polar in the following pairs of molecules? a) H₃C–NH₂, H₃C–OH b) H₃C–OH, H₃C–SH

Question

Which bond is more polar in the following pairs of molecules? 

(a) H₃C–NH₂, H₃C–OH 

(b) H₃C–OH, H₃C–SH 

Answer 1

(a) C–O is more polar because O is more electronegative than N. 

(b) C–O is more polar because O is more electronegative than S.