unit-circlWXYB Chapter1: ×KW Netflix 6476 bcswebdav/pid-8206159-dt-content-rid-3

Question

unit-circlWXYB Chapter1: ×KW Netflix 6476 bcswebdav/pid-8206159-dt-content-rid-33967356 1/courses/CHEM201.93721.20 der range Continuetodo mixed meltin-oints withother possible comp until you are certain of the identity of your unknown. Keep a good record o you have done and include in your notebook (and in your lab report) the strateg are following in choosing what to mix with your unknown. List of Melting Points of Possible Compounds for the Unknown Solid Known Known Name of Compound Name of Compound mp (°C) mp (°C) 4-chlorobénzophenone acetamide vanillin o-toluic acid azelaic acid m-toluic acid mandelic acid benzoic acid 75 80 81 108 109 maleic acid urea benzoin p-acetotoluidide benzenesulfonamide 103 135 149 151 113adipic acid 120 122 128 *D(+) tartaric acid sometimes give a melting range of 160-170°C 4-acetamidophenol (or acetaminophen) hydroquinone D(+) tartaric acid 172* 172 benzamide EXPERIMENT 1: MELTING POINT, BOILING POINT & REFRACTIVE INDEX Part B. Boiling Point: The boiling point (bp) of a liquid is defined a temperature at which the vapor pressure of the liquid equals the extemal tatmospl ressure, As with the mp. the bp is a phy sical property that helps us character

Explanation / Answer

1.answer- Melting point of unknown solid is 120-121 degree centigrade by comparing this with know melting point of solid from table mandelic acid have 120 degree melting point, therefore mandelic acid is given unknown solid.

2. Refractive index of mandelic acid is1.5204

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