Organic Chemistry- Reducing Sugars and Fehling’s Solution

Bromination of Saturated and Unsaturated Hydrocarbons

Blue Bottle

Dehydration of Sugar by Sulfuric Acid

Disappearing Coffee Cup

Formation of a Silver Mirror

Models 360

Nylon 6 – 10

Organic Synthesis With Familiar Materials

Oxidation of Primary, Secondary, Tertiary Alcohols

Oxidation of Luminol

Polyurethane Foam

Slime

Underwater Fireworks: Chlorination of Acetylene

Carbide Lamp

Differences in Miscibility of Organic Alcohols With Increasing Chain Length

Combustion of Cellulose Nitrate (Guncotton)

Different Smells of Carvone Isomers

Distinguishing Between HD and LD Polyethylene

Enviro-bond: Cleaning Oil Spills

Esterification Using a Dean-Stark Trap

Ethanol Cannon

Happy/Sad Balls

IR Demonstration I – Atomic Coupling

IR Demonstration II – Molecular Vibrations

IR Demonstration III – Molecular Vibrations

Making a Rubber Ball from Latex

Plastic Samples

Reaction Intermediates in Organic Chemistry

Reducing Sugars and Fehling’s Solution

Rod Climbing by a Polymer Solution

Rotating Rainbows

Silly Putty

Soap Emulsifies Hydrocarbons

Superabsorbent Polyacrylate Gel

Tubeless Siphon

Alkimers

Aniline Hydrochloride-Formaldehyde Polymer

Phenol-Formaldehyde Polymer

Saponification

Relative Reactivity of Reducing Agents

Electrophilic Aromatic Substitution Reaction/EAS Reaction

Reactivity of Alkanes vs Aromatic Compounds

Inductive Effect

Optical Activity of Racemic Mixtures With Limonene

Relationship of Absorbed Light to Observed Color

Density and Miscibility of Liquids

Extraction of Copper Ions from Solution with Orform®

Gel Formation with Sodium Alginate and Calcium Chloride

Ozonolysis

Hydrolysis of T-Butyl Chloride: A Lab and Lecture Experiment

Reducing Sugars and Fehling’s Solution

Description: Simple sugars like glucose and fructose reduce  Fehling’s solution when heated, giving  a red precipitate from the initial solution; sucrose does not.

Source:  UW Card Catalog

Year: 1998 Vol:  N/A  Page:  N/A

Keywords: Fehling’s Solution, Glucose, Fructose, Sucrose, Precipitation, Redox, Copper oxide

Rating:

Hazard: Medium

  • Acute toxicity hazard
  • Aquatic toxicity hazard
  • Skin corrosion hazard
  • Burn hazard
  • Electric shock hazard
  • Corrosive to metals
  • Serious eye damage

Effectiveness: Average

  • Good connection from demo to course material
  • Results are observable without guidance
  • Time to results is high
  • Moderate reliability

Difficulty: Medium

  • Procedures with  intermediate steps to results
  • Some timed manipulations
  • Reactions or demos at non-standard conditions
  • Use of toxic reagents

Safety Precautions:

  • Eye protection required
  • Gloves required
  • Thermal gloves recommended
  • Use of UL approved three-prong outlet
  • Absorbent materials on hand
  • Perform on chemically resistant surface
  • Perform in a well-ventilated area
  • Sodium bicarbonate on hand
  • Prevent release of reagents to the environment

Class: Organic Chemistry, Biochemistry

Division: General, Organic Chemistry