Ester Lab.

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Presentation transcript:

Ester Lab

Preparation of Esters Lab Esters are responsible for the “fruity” odours and flavours of many naturally occurring products. Chemists can reproduce these odours or flavours in the lab by mixing the right alcohol and carboxylic acid together; thus producing “artificial” or “synthetic” versions of these naturally occurring compounds. In this lab activity you will create several esters and attempt to identify the odour of each ester created. We will be doing the lab on TUESDAY, MARCH 8

Lab Procedure Flow 10mL cold water in dish, pour test tube #1 500 mL Beaker on hot plate secured to stand 10 drops ethanol Test Tube #1: 10 ethanoic acid + 5 drops H2SO4 Hot water bath for 5 minutes 10mL cold water in dish, pour test tube #1 Identify the smell and record results 10 drops propan-2-ol Test Tube #2: Hot water bath for 5 minutes 10mL cold water in dish, pour test tube #2 10 drops pentan-1-ol Test Tube #3: 10mL cold water in dish, pour test tube #3 Create a Hot Water Bath 3 Test tubes in Racks Teacher adds acids Gently shake test tubes and place in hot water bath Petri Dish Smell

Lab Safety

Lab Apparatus

Lab Report You must submit the following as your Lab Report (individually) Purpose Lab Procedure Flow Chart Observations Table Analyze and Evaluate (p. 67) Apply and Extend (p. 67)