Question

Hello! I am in OCHEM 2 and im trying to figure out what my unknown is. Based off my many tests, the unknown has multiple bonds and a boiling point of 39-41 degrees celsius. Attached is the IR and NMR. I think my unknown is 1-pentyne. The unknown I have has a very pungent smell. The molecular formula is not given as the unknown is not given. A list of 35 possible unknowns are given.

Name / Structure	BP (°C)	Name / Structure	BP (°C)
1- pentyne	40.2	Methyl ethyl ketone	79.64
3- Pentanol	116	Methylene chloride $HkeNn6_kbbnj4BaChLmAKE2hkJPl54un3klMUz7-$	39.6
Ethanol $6vC-qpUsFW7Sex1VCDNQCOVz-gYecR5bV_cFI617$	78.37	1-butanol $lYTVOLujvVidmDZTHzf90Z1dQmAJUQ02DwI_ant4$	117.7
Acetaldehyde	20.2	Cyclohexane $w7aSzKMAIB-TPBLIZX1-Or6lsqGM79op68Z4_m3d$	81
Ethanoic acid $nzvfGY6Y_UdhgDJ8RksqKtpDvHTNxfJMTz69W3vh$	118.1	Acetone	56.5
Isopropanol $qg6aT1m_Y3vZcWL2CjDxgSberugAJFVSDcx7nrGc$	82.5	Benzoic acid $an48OJ28pV4n_zjAHGFCvzbrduwfxpIcTgq2p84h$	249.2
Propanal $BritPVm98QFg_TdJabmUhTm9vcQ3V17_pTl62UBs$	48.8	Cyclohexene	83
Butanal	74.8	Chloroform	61.2
2-butanone $lhE6rL_qmDcYX7IptOPiLXVO9z_2w-6VA7UOk5I9$	79.64	Ethyl benzene $_xwLHFpXuvNLasBcSvFTisdrp8GqQU8DYqmNcFMk$	136
Cyclopentanone	131	1-propanol $YNDeeju0A4GAA_P_3C1h2PmuAZif3DEOBHL0lduF$	97
T-butyl alcohol $IeYqk6dUQMomZFjcnEdl_Qjjb_9Cp2zSzD9NJ5NY$	82	Hexane	68
2-pentanone $DZuoOdWDhbmGC71_lmj_dEglrfKaNaDzlXblGJPq$	101	Adipic acid	337.5
Methanol	64.7	2-methyl-2-butanol	102
Bromobenzene	156	Carbon tetrachloride	76.72
Methanoic acid	100.8	1-octanol	188
1-chlorobutane	78.5	Toluene	110.6
Phenylacetaldehyde	195	Benzene $VQeXh6kVfFGx6H9ecsg_hrl7d1piJdN05S6gwjHK$	80.1
Oxalic acid dihydrate $PFA-PGFV7_4KBO8sbaGkmY2TJuN64CFHsY24h_9O$	108-109	1-pentanol	138

Answer 1

나 D; ch) oro 서-e.thali e Buf J.니 TR: 2 1 了