why is p ether not a good solvent for recrystallization of acetanilide
why is p ether not a good solvent for recrystallization of acetanilide
please answer all parts I am trying to check my
answers.
Recrystallization of Acetanilide Recrystallization is an important method used by chemists to purify solid compounds. When a chemist conducts a chemical reaction as shown in Scheme 1, it will rarely go to 100% completion, and will frequently produce byproducts. These byproducts and some of the unreacted starting materials will be present in the end as impurities. Chemists need ways to remove these unwanted impurities so they can isolate their...
Recrystallization of Acetanilide was conducted using water as our solvent. First we had to choose a solvent based (water was chosen as our solvent due to it not dissolving acetanilide at room temp but dissolved it when heated) Then we performed recrystallizaation, vacuum filtration and then melting point measurements. For the post lab discussion for recrystallization of acetanilide report we have to address several different arguments. The ones below I'm not sure what to focus on to completely defend what...
3. Describe the characteristics of a good recrystallization solvent. L uftetallizado
#10 What are the attributes of a good recrystallization solvent? (Two Attributes) (4 points)
#10 What are the attributes of a good recrystallization solvent? (Two Attributes) (4 points)
1. How did the melting point of your acetanilide change after recrystallization? 2. Why would you test the purity of your acetanilide by mixing it with a known, pure sample of acetanilide and rechecking the m.p.?
1.describe how you would separate a mixture of acetanilide and sand 2.water is a convenient solvent for recrsytallizing what type of compound. 3. why is fluted filter paper usually used when doing the hot filtration during a recrystallization. 4.describe how seed crystal are used in recrystallization. 5.explain the adage " like dissolve lik
9. During the recrystallization of the benzil, an extra 7 ml of the recrystallization solvent is added after the minimum amount is found. This extra is added because the benzil crystals are light and fluffy and adsorb most of the solvent if the extra solvent is not added. Why would it be detrimental to not have any solvent left after the crystals have formed during recrystallization.
Pre Lab Question Please answer in complete
sentences.
Describe the characteristics of a good recrystallization solvent The solubility of a compound is 59 g per 100 mL in boiling methanol and 30 g per 100 mL in cold methanol, whereas its solubility in water is 7.2 g per 100 mL at 95 degree C and 0.22 g per 100 mL at 2 degree C. Which solvent would be better for recrystallization? Explain why. In what circumstances is it necessary to...
Once a solvent for recrystallization is chosen, why is it important to use the minimum amount possible?
a) Why do you use a minimum of hot water solvent in carrying out a recrystallization of a particular compound? b) Why is it desirable to use suction filtration rather than gravimetric filtration in recovering the purified crystals? c) Why should the suction be released before the solid is washed with fresh solvent?