Tests for ketones and aldehydes And carboxylic

• What is the reagent used in Fehling's Test?

  Fehling's solution
• What does a positive result in Fehling's Test indicate?

  An aldehyde is present
• What is the positive result observed in Fehling's Test?

  A brick-red precipitate of copper(I) oxide forms
• What does a negative result in Fehling's Test indicate?

  A ketone is present
• What is the reagent used in Tollens' Test?

  Tollens' reagent
• What does a positive result in Tollens' Test indicate?

  An aldehyde is present
• What is the positive result observed in Tollens' Test?

  A silver mirror forms on the test tube
• What does a negative result in Tollens' Test indicate?

  A ketone is present
• What reagents can be used to test for carboxylic acids?

  Sodium carbonate or sodium hydrogen carbonate
• What observation indicates the presence of carboxylic acids when using sodium carbonate?

  Effervescence due to carbon dioxide gas
• What causes the effervescence observed when testing for carboxylic acids?

  Production of carbon dioxide gas
• Reagent to test for carboxylic

  Add NAHCO3 sodium hydrogen carbonate
• Whats the result when a carboxylic acid is present

  Fizzing