Why did you use a separatory funnel in today’s experiment? It served two functio

Question

Why did you use a separatory funnel in today’s experiment? It served two functions.

Why was saturated bicarbonate added to the separatory funnel?

lab below

SYNTHESIS OF TERTIARY BUTYL CHLORIDE CH2 CH 3 CH CH 3 3 Hydrochloric Acid tert-Butyl Alcohol tert-Butyl Chloride INTRODUCTION In this experiment, the student will see that tertiary alcohols react almost instantaneously with hydrohalic acids at room temperature to form an upper layer of an alkyl halide. Ihe student will also become familiar wi and also how to dry organic liquids using drying agents. Before coming to lab, read the uses of the separatory funnel (page 8) and drying organic liquids (page 8) ith some of the uses of the separatory funnel PRECAUTIONS 1) Concentrated hydrochloric acid can cause severe burns. 2) Tertiary butyl chloride is very flammable, therefore, no flames are to be used today 3) Always vent the separatory funnel when mixing compounds and remove the hollow stopper when dispensing liquids from it PROCEDURE 1) To vour separatory funnel add 7.86 g (10 mL) of tert-butyl alcohol and 25 mL of concentrated hydrochloric acid. (Concentrated hydrochloric acid has a molarity of 12.4M Knowing this value and that M- mol/L, the number of moles can easily be calculated Knowing that the MW of HCl is 36.46g/mol., the number of grams of HCl also be calculated

Explanation / Answer

tert-butyl alcohol reacts with HCl to form tert-butyl chloride

tert-butyl alcohol is more acidic because of the three methyl groups (+ I effect).

The lower aliphatic alcohols are soluble in water because they can form hydrogen bonding with water.

The use of seperating funnel in this experiment :

The formed tert-butyl chloride is not soluble in water because it can't form form hydrogen bonding with water molecules.(tert-butyl chlordie and water are immisible) In the seperating funnel tert-butyl chloride is on the top layer and water is at the bottom layer. The bottom layer will be discarded.

The use of bicarbonate in this experiment is to remove the traces of HCl present in the tert-butyl chloride.

OR to extract the pure tert-butyl chloride.

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