CHEM325 Lecture 1: Orgo Lab Final Review
Document Summary
To dry to remove remaining water (moisture) from product. Saturated solution wants to become more dilute and absorb moisture from air. Capillary tubes (melting point capped, tlc not capped) Changing scale of reaction- divide all numbers by factor. Silver nitrate test- tertiary alno3 (precipitate us agbr) Finkelstein test- primary nai (some secondary) (precipitate us nabr) Kmno4- purple solid salt, water solvent and ethanol, oxidation agent to react with alkane to make a diol, reduced to mno2. Mobile phase- gas or liquid (we used liquid) When using silica, mobile phase is less polar than silica. 10% etoac in hexanes- much less polar than silica. Stationary phase- silica and alumina (we used silica sio2) On surface, silica is bonded to 1 si and 1 h (polar) Ex: a is more polar than b, b travels further. Rf (for each compound)- distance compound traveled from line)/total distance solvent traveled. Each compound is always <1, more polar is smaller rf.