Using benzoic acid's solubility data in water (found in the pre-lab), calculate the amount of HOT WATER needed to dissolve YOUR CRUDE BENZOIC ACID. Based on YOUR DATA AND OBSERVATION, explain why you may have used more OR less water than the calculated value. tobulilie of bem sic acid in het water sepall at 100°C.
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- . Consider the two molecules shown here. 1-butanol (1)- 7.3g/100ml and butyric acid (2)- miscible The solubilities of each in water is given. What is “solubility”? What does the solubility value given for (1) here mean? Please explain, based on their structures, why the solubility of (2) is greater than the solubility of (1) in water. For a complete answer, you should start with the types of IMFs involved in the different parts of the dissolving process. You should also use the kind of reasoning from class regarding the contributions…Please answer it ASAP and CORRECTLY for an upvote. Thank you. Benzoic acid is 9 times more soluble in chloroform than in water. The percent benzoic acid that will remain from a water solution of benzoic acid if 13. Equal quantity of chloroform and water is used is 14. Twice as much chloroform as water is used is 15. If extraction as in Problem 13 were followed by an extraction as in Problem 14 isYou are given the suggestion that a 0.15 ppm quinine aqueous solution is a good concentration to shoot for in the experiments, but quinine fluoresces best when it is acidified to 0.10 M H2SO4. Describe how to make 100 mL of the recommended solution starting with quinine sulfate (actually, quinine hemisulfate salt monohydrate). Assume you also have 1.0 M sulfuric acid and de-ionized water.
- Make an schematic diagram for procedure below: B. %SO3 determination Transfer all precipitate to the filter paper avoiding any loses during the filtration procedure. One may use a rubber policeman to scrape remaining precipitate in the beaker. Wash the precipitate in the beaker 3x with hot water before transferring to the filter paper. Test the washings with 0.1 M AgNO3 Cloudiness indicates presence of chloride ions; therefore there is a need to wash more the precipitate. Carefully lift the paper out of the funnel, fold it as demonstrated by your instructor and transfer it onto the constant weighed crucible. Dry the crucible cautiously with a small flam, as instructed by your instructor. The flame should be directed at the top of the container, and the lid should be off. Avoid spattering. After drying, char the filter paper by increasing the flame temperature. The crucible should have free access to air. The lid should be kept handy to smother the filter paper in case it catches fire.…https://www.youtube.com/watch?v=jDgSohKVLio Compare the results obtained when soap solution was added to the permanent hard water treated with sodium carbonate with that obtained when it was added to the untreated permanent hard water. Compare the amount of bubbles and precipitate formed.Volumetric Analysis The mass of KHC8H4O4 is measured to the nearest milligram; however, the volume of water in which it is dissolved is never of concern—water is even added to the wall of the Erlenmeyer flask during the titration. Explain why water added to the KHC8H4O4 has no effect on the data, whereas water added to the NaOH solution, may drastically affect the data.
- profile-image Time remaining: 00 : 09 : 27 Chemistry A group was given the responsibility of performing a recrystallization experiment in their laboratory to see if the three newly found solvents could purify and separate a mixture including compounds A and B. The following are the solubilities of the two compounds in g/100 mL of hot and cold solvents:Solubility in g/100 mL solvent A B B Solvent Hot Cold Hot Cold 1 4.60 1.10 5.30 1.90 2 6.40 5.80 8.40 1.10 3 3 9.70 3.30 6.80 What is the %recovery and %purity of A and B in the chosen solvent? Show solutions plsA mixture consisting of 15 mole % Phenol in water is to batch distilled at 260 torr, what fraction of the original batch is remains in the still when the total distillate contain 98mole % w water? What is the residues concentration?Because of the risk of lead poisoning, the exposure of children to lead-based paint is a significant public health concern. Thefirst step in the quantitative analysis of lead in dried paint chips is to dissolve the sample. Corl evaluated several dissolution techniques.24 In this study, samples of paint were collected and pulverized with a Pyrex mortar and pestle. Replicate portions of the powdered paint were then taken foranalysis. Results for an unknown paint sample and for a standard reference material, in which dissolution wasaccomplished by a 4–6-h digestion with HNO3 on a hot plate, are shown in the following table. (a) Determine the overall variance, the variance due to the method, and the variance due to sampling. (b) What percentage of the overall variance is due to sampling? (c) How might the variance due to sampling be decreased?
- but my prof said the answer is H2SO4,NaCN and H2O for solvent. why did he answer like above? and please tell me how did u find KCN and HCN what makes you answer like that Should i have to memorize some solvent or reagent? then let me kno that listIf a mixture is distilled rapidly, the separation of its compound is poorer than if the mixture is distilled slowly. Please explain why is that so using your own understanding. I don't need a copy-pasted answer from google.A student was careful to make and stir all of her standard solutions immediately before measuring their turbidity for her calibration curve. However, she let her tap water solutions sit for 10 minutes prior to measuring their turbidity. If she measured the top portion of the solution, would her experimental sulfate ion concentration be higher or lower than it should be?