a sample contains a mixture of 1-propanol, 1-pentanol, butyl acetate, ethyl acetate, and 2-heptanone. using simple distillation, the highest volume of distillate came out at 135-140 °c. after pooling these fractions, the corrected refractive index of the compound was found to be 1.410 at 20 °c. using the crc handbook of chemistry