IOC LAB QUIZ

• What observations would you expect to see in a positive Fehling's test for an aldehyde

  Blue solution to brick-red precipitate
• what happens to the pH of a solution when a caboxylic acid is added to water

  Decreases
• What is the purpose of using sodium bisulfite in reactions with aldehydes and ketones

  to convert the carbonyl compound into a water-soluble bisulfate addition product
• which of the following gives positive result in sodium nitroprusside test

  acetone and ethyl methyl ketone
• which of the following compounds would produce an orange-red when reacted with 1,2 Dinitrophenylhydrazine

  Acetophenone
• B. SECONDARY ALCOHOLS


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• the schiff's reagent test for aldehydes involves the formation of a colored complex with the aldehyde. what color change is typically observesd in a positive test

  pink to magenta
• what is the composition of Schiff's reagent

  fuschin
• what happens when stearic acid reacts with water

  it floats in water , insoluble
• what color change is observed in a positive sodium nitroprusside test


  clear to brick red
• what is the color change observed in a positive molisch test


  purple ring
• what is the following tests is specific for ketones and distinguishes from aldehydes

  tollen's test
• visual evidence when acetic acid reacts with sodium hydroxide

  neutralization occurs
• visual evidence when acetic acid reacts with alcohol and sulfuric acid

  formation of pleasant odor
• what happen when alcohol reacts with carboxylic acids

  esters will be formed
• which of the following are test solution used in iodoform test

  acetone, ethyl methyl ketone