Organic chemistry intro to lab
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Transcript of Organic chemistry intro to lab
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ORGANIC CHM 250 lab-what to expect?By : Dr. Robert D. Craig, Ph.D
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In the past-1980’s
• Large text books• Needed to memorize “Reactions of functional
groups and mechanism”
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Chemials you are dealing with
• Are ofcourse-are Acids –Bases or Organic!• They have high vapour pressures• They are Flammable
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Safety in a car
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lab coats
• Can be taken off if something spills on You
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Accidents could be from some else
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Just like a drunken driver
• You are not always the cause-some other lab
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Most organic molecules are tearing agents-leave lab when feeling dizzy!
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Also –No contact lens!!
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No flip flops –when warmer!!
• Proper footwear is imperative-sneakers OK!
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The labs are cold-be prepared
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Water flow simulates air flow
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When Some has an accident . .
• Hold out a stick . . . .
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Get the instructor . .know locationof showers
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Need to work in pairs
• You can not see Yourself!
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Lastly –respect for others
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Assignments will look like this
Week 2 : 2/6/2012 Prelab Questions: Due 2/6/2012 at the start of the class:• Please watch required video-download sample lab-• Define what is a crystal?• Write an expanded outline for the seven-step process
of crystallization.• *This will be included in the lab report
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.
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.
• This technique is used for obtaining a compound in pure solid form of well-defined geometrically shaped crystals. This process of crystallization can be used for the purification of a compound only when the compound and the impurities present in it differ considerably in their solubilities in any particular solvent
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Digimelt apparatus
Chapter 4: Melting point- Please watch required video in portal
• 3.) (3 sentences) Why are melting points
recorded?• Review operation of “Digimelt apparatus”*This will be included in the lab report