IOC LAB: experiment reactions (equations)

• The equation below shows the reaction for the test for oxygen or ferrox test.

  
• The equation below shows the equation for a test for halogens, called silver nitrate test.

  
• The Baeyer's test is shown in the equation below. The equation shows a solution with pink color.

  
• The equation below shows a reaction for the Baeyer's Test. It shows a reaction for colorless solution, which indicates saturation.

  
• The equations below represent the reactions during the chromic acid test which are the tests for the detection of aldehydes and ketones.

  
• The picture below shows the reaction during the lucas test in which the classification of alcohols are tested. Secondary alcohols only have cloudiness for 5 minutes, while primary alcohols have no reaction.

  
• The acrolein test reaction is shown in the equation below. The glycerol undergoes dehydration when heated with KHSO4 to form propenal (acrolein), which has a pungent odor.

  
• The reaction below tests the phenol's solubility in alkali using sodium hydroxide.

  
• The equation below shows phenol's reaction with ferric chloride.

  
• The bromine water test shows the reaction below.

  
• The reaction below is involved in the test for carbonyl groups using 2,4-DNPH. A successful test is indicated by the formation of a precipitate yellow, orange, or red known as dinitrophenylhydrazone.

  
• The reactions below are shown in the sodium bisulphite test. Most Aldehydes and Ketones give Bisulphate addition product with Sodium Bisulphate, which is white crystalline in nature except for Acetone Phenone and Benzophenone.

  
• The ester test is shown in the picture below. Carboxylic Acid reacts with alcohol in the presence of concentrated Sulphuric Acid and forms a pleasant smelling Ester. This reaction is known as Esterification.

  
• A hydroxamic acid test reaction is shown in the equation below. Formation of a burgundy color (or magenta color) appearance in the solution shows the presence of Acyl or Ester group.