Recrystallized Phenacetin Lab Report

The IR spectrum in KBr was a great way to compare the library spectrum to the

crude and recrystallized Phenacetin. The KBr is a compound that does not show up in

the spectrum, only the crude and recrystallized Phenacetin show. In this experiment, the

crude had an 87.17% match to the library. In the recrystallized Phenacetin, the IR

spectrum was taken twice due to the amount of KBr used in the pellet. The first

recrystallized spectrum had a 68% match to the library spectrum. That not being that

good of a percentage, the spectrum was taken again using less KBr, giving a 70.92%

match. In order to make the percent closer to the library, less KBr could have been used

for a third spectrum. The more KBr that is used limits the amount