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hence , option d
0.67mL is right option.
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QUESTION 5 Recrystalization of the crude aspirin requires 10 mL of Solvent per 3 g of...
This is a post-lab question of the Recrystallization of Aspirin experiment. This is related to organic...
This is a post-lab question of the Recrystallization of Aspirin experiment. This is related to organic chemistry. Please be detailed, thank you! Given the table for solubility of compounds X and Y in solvent Z. If 2.00 grams of impure compound X (contaminated by 12.0% Y by weight) is recrystallized from 25.0mL of solvent Z, what will be the purity of recrystallized X? Solubility per 100 g of Solvent Z Compound 20℃ 80℃ X 1.0 g 8.0 g Y 0.70...
QUESTION 1 Aspirin (10.0 g) was saponified with NaOH. After workup, 8.5 g crude salicylic acid...
QUESTION 1 Aspirin (10.0 g) was saponified with NaOH. After workup, 8.5 g crude salicylic acid was isolated. What is the percent yield of the crude product? 110% 153% 90% 65% QUESTION 2 Aspirin (10.0 g) was saponified with NaOH. After workup, 8.5 g crude salicylic acid was isolated. The product was further purified and only 5.0 g were isolated. Calculate the percent recovery from the purification step. 170% 90% 65% 59% QUESTION 3 Aspirin (10.0 g) was saponified with...
One aspirin tablet is ground and 0.1940 g powder is dissolved in 10 mL EtOH and...
One aspirin tablet is ground and 0.1940 g powder is dissolved in 10 mL EtOH and 25 mL of DI water. Indicator is added. If it requires 20.84 mL of the LiOH solution to titrate the aspirin solution to the endpoint, how many moles of base were neutralized by the ground Aspirin powder?
Question #12 10) The technique of recrystallization involves dissolving a crude solute in a minimum amount...
Question #12
10) The technique of recrystallization involves dissolving a crude solute in a minimum amount of solvent to create a followed by of the solute into a more pure form. A) saturated solution; condensation B) unsaturated solution; evaporation C) supersaturated solution, recrystallization D) concentrated solution; deposition E) dilute solution; reformation 11) 11) Which of the following statements is TRUE? A) In general, the solubility of a gas in water decreases with increasing temperature. B) In general, the solubility of...
1. Compound X has a solubility in toluene of 18 mg per 100 mL at 20...
1. Compound X has a solubility in toluene of 18 mg per 100 mL at 20 °C, and a solubility of 0.64 g per 100 mL at 70 °C. You are given a sample of 0.48 g of compound X which is contaminated with 25 mg of compound Y. A. If compound Y is always soluble in toluene, describe in detail how you could separate Y from X. Would x now be pure? B. If compound Y has approximately the same values of...
2.0 g of a substance in 12 mL of a solvent is extracted with three aliquots...
2.0 g of a substance in 12 mL of a solvent is extracted with three aliquots of 10 mL of an extracting solvent. How much of the substance by mass was extracted out of the original solvent? (Assume K=2)
Answer for question 10? You obtain 1.8 g of an impure solid. You know that the...
Answer for question 10?
You obtain 1.8 g of an impure solid. You know that the sample contains 1.6 g of your desired compound. What is the maximum mass of your desired compound that you could recover from a recrystallization using 100 mL of Solvent A according to the below solubility table? Based on the solubility table shown in problem 9, what is the minimum volume (in mL) of solvent that would be needed to recrystallize 7.23 g of the...
The solubility of benzoic acid in water is 6.80 g per 100 mL at 100 °C...
The solubility of benzoic acid in water is 6.80 g per 100 mL at 100 °C and 0.34 g per 100 mL at 25 °C. Calculate the minimum volume of water needed to dissolve 1.00 g of benzoic acid at 100 °C. Calculate the maximum theoretical percent recovery from recrystallization of 1.00 g of benzoic acid from 15 mL of water, assuming the solution is filtered at 25 °C. How much benzoic acid can you dissolve in 25 mL of...
please show work so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml...
please show work
so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml final volume While I have used 1:10 as a standard the same rules apply for all dilution factors. Try these problems: x 0.5 X0.5 1. You need to make a 1:25 dilution factor. If you final volume is 25 mL this means that you need_ _mL of stock and mL of solvent to make your final volume of 25 mL. 2. If you needed...
question 3 of 10 3.) Calculate the volume (ml) per dose to be administered of these...
question 3 of 10 3.) Calculate the volume (ml) per dose to be administered of these parenteral medications. Round to the nearest tenth mL. A provider orders pegfilgrastim 6 mg, subcut, after chemotherapy today. The pharmacy provides pegfilgrastim in vials containing 6 mg in 0.6 mL. mL
QUESTION 1 Aspirin (10.0 g) was saponified with NaOH. After workup, 8.5 g crude salicylic acid was isolated. What is the percent yield of the crude product? 110% 153% 90% 65% QUESTION 2 Aspirin (10.0 g) was saponified with NaOH. After workup, 8.5 g crude salicylic acid was isolated. The product was further purified and only 5.0 g were isolated. Calculate the percent recovery from the purification step. 170% 90% 65% 59% QUESTION 3 Aspirin (10.0 g) was saponified with...
Question #12
10) The technique of recrystallization involves dissolving a crude solute in a minimum amount of solvent to create a followed by of the solute into a more pure form. A) saturated solution; condensation B) unsaturated solution; evaporation C) supersaturated solution, recrystallization D) concentrated solution; deposition E) dilute solution; reformation 11) 11) Which of the following statements is TRUE? A) In general, the solubility of a gas in water decreases with increasing temperature. B) In general, the solubility of...
Answer for question 10?
You obtain 1.8 g of an impure solid. You know that the sample contains 1.6 g of your desired compound. What is the maximum mass of your desired compound that you could recover from a recrystallization using 100 mL of Solvent A according to the below solubility table? Based on the solubility table shown in problem 9, what is the minimum volume (in mL) of solvent that would be needed to recrystallize 7.23 g of the...
please show work
so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml final volume While I have used 1:10 as a standard the same rules apply for all dilution factors. Try these problems: x 0.5 X0.5 1. You need to make a 1:25 dilution factor. If you final volume is 25 mL this means that you need_ _mL of stock and mL of solvent to make your final volume of 25 mL. 2. If you needed...
question 3 of 10 3.) Calculate the volume (ml) per dose to be administered of these parenteral medications. Round to the nearest tenth mL. A provider orders pegfilgrastim 6 mg, subcut, after chemotherapy today. The pharmacy provides pegfilgrastim in vials containing 6 mg in 0.6 mL. mL
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