O1: Organic Analysis Flashcards
What do you use to test for alcohols?
Acidified potassium dichromate
What is the colour change when testing for alcohols?
Primary: orange to green
Secondary: orange to green
Tertiary: orange to orange
What can use use to test for aldehydes and ketones?
Tollen’s reagents
Fehling’s solution
What is the colour change for aldehydes and ketones with tollens?
Aldehyde- silver mirror
Ketone- no change
What is the colour change for aldehydes and ketones with Fehlings?
Aldehydes: blue to brick red
Ketones: blue to blue
What do you use to test for alkenes?
Bromine water
What is the colour change for an alkene?
Orange/brown to colourless
What do you use to test for carboxylic acids?
Add sodium carbonate which will produce CO2
Lime water
What is the colour change for carboxylic acids?
Colourless to cloudy
What can you use to determine molecular formulas and compounds?
Mass spectrometry
What does infrared spectroscopy identify?
Functional groups
What are two easily identifiable things in an infrared spec?
OH group (rounded curve)
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