1) What is the reason for extracting the organic (ether) layer with 10 ml of wat

Question

1) What is the reason for extracting the organic (ether) layer with 10 ml of water?

2) a.if during the extraction you observed a cloudy or milky solution what can you do to prevent this from happening? what is this b.phenomenon called?

3) what is the purpose of making the solution basic i.e adding 10% naoh?

4) what would happen if you added 5% naoh instead of 10%? there are 4 questions

please answer them with as much detail as possible.

You are extracting an unknown base (RNH2), unknown neutral (RH) and unknown acid (RCOOH). In these steps you are extracting each with 2 portions of 25 mL 5% HCL and 1 portion of 10 mL h2o. In the second question is referring to the extraction step i just stated. The third question you are alkalizing the base to a pH greater than 12 with 10% NaOH. The 4th question is asking if you alkalized it with 5% NaOH instead of 10%. Hope it helps

Explanation / Answer

1. Organic (ether) layer is extracted with 10 ml of water because ether and water are immiscible. Ether is soluble in water to a small extent. If excess of water is used, ether will dissolve into it. Therefore, ether is extracted with 10 ml of water. When ether is added to water, it will form a separate layer. Since ether is less dense than water, the ether will form a layer on top of the water and hence the two layers will be separated.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.