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2025-CHE1APL(BU-2) - APPLICATIONS OF CHEMISTRY
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The reaction of the acetic anhydride with the alcohol, in the presence of acid, to form the ester is carried out in a reaction flask that is connected to a condenser (as shown below)
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As the reaction flask is heated and the solvent in the reaction flask is converted to vapour, the condenser allows water to surround the inner glass column. This cools the solvent vapour inside the column and the vapour condenses and returns to the reaction flask. This is important so that the reaction flask does not boil dry. Which of the following explanations is the most important reason for attaching the inlet of water to the bottom of the condenser and not the top.0%
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A flowchart for this experiment is given below. The final step is the distillation. 5°C below the boiling point of your ester you must do WHAT?
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The reaction to form the ester is carried out in a reaction flask (as shown below). Which of the following is the most important safety issue when performing this reaction?
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A flowchart for this experiment is given below.Where should all the aqueous wastes (in steps 3 and 5) be placed?
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The reaction to form the ester is carried out in a reaction flask (as shown below). If the solvent is boiling, at what temperature is the reaction being performed?
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The reaction to form the ester is carried out in a reaction flask (as shown below). What MUST you do to the reaction flask after each addition of each 1 mL portion of acetic anhydride?
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A flowchart for this experiment is given below. When you wash the organic layer with 10% sodium bicarbonate (NaHCO3) what MUST you do?
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When esters react with water (hydrolyze) a carboxylic acid and an alcohol is formed. Determine the alcohol and the carboxylic acid that are formed on the hydrolysis of
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When esters react with water (hydrolyze) a carboxylic acid and an alcohol is formed. Determine the alcohol and the carboxylic acid that are formed on the hydrolysis of
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Which of the following would represent the ester formed on the reaction of 1-heptanol with acetic anhydride?Structure A
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