Question

Genzorc aad P-Dich borobencene Islared Grud Po-z Tral 1-meting Pail 9. 6-122.8C 52.4-548 53.2- 55.8C 12.3-123.6

comment on the effectiveness of my extraction and purification, state and use data especially percent recovery and melting point for lab discussion.

Answer 1

Given data: P-dichlorobenzene Bonzolc acId DescmpHon 1S gM 2.0 gm IniHal Mass 164 gm Isolated arude mass 187 gm O.2 Isolated 163 gm PuriFied Tnass 52.4 54. 53.2-55.8C 119. 6-122. 8C MelHng poink Tial- 121.3-123.6°c Tial 2 mass benzojc acid is 2.0 sm 1ost &in pumilicatio Here IniHal AFtes isolation SOMe mass Is lost pdichlorobenzene initial but during isalation Crude mass again some process mass is mass In Of Case Incre ares gm Some ImpunHer ase added ger y in it Bur thar means abter purijication we a.2 of mass Percent ecove crude mass 100 Tnitial mass 1.&7 Bemzaic acid x100 2 .0 164 flor P-dichlorcbenzene (09.33% Here caude mass P-dichlora benzene is high. This is due to impurtHes. Purs Fied mass 7Tecoveny Cude masS 1.63 27.16 1 Benzoic aqd x100 1&.7

O.2 12.19 / FOr P-dichlorobenzeme = X100 164 for p-dichlorobenzene is for benzoic acid is go ed Here pmi bied 7 rcovey 1ecovery Vey less. Purified mass Jecoveny X100 11 Tnitial mass 163 & 1.S For benzoic acid 2 0 13.33 % P dichlorobenzene O.2 xl00 For S anly o Hene ecovery P- dichloro benzene is so Veny less purly poductis obtained %1.51 13.33 Yieid benzdic a cid is good ie tandard melHng Point 122. 30c 53.1°C Benzoic acid Pdichloro benzene Meling point is matches tho Stand ard value So corecty only recovery PToduct expract P- dichlorobenz ene i veny Jess.