Organic solids are best purified by a. recrystallization b. vacuum distillation c. fractional distillation d. simple distillation

Q: 13. Calculate the freezing point and boiling point of 2.5 g Al(NO3)3 in 18 g of H2O. Assume complete…

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Q: 33. The compound above would NOT be soluble in a. water b. hexane C. nonpolar solvents d. more than…

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A: "The correct answer and explaination is given in below steps"

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A: To identify: The species which is water-soluble.

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Q: A 1.2525 g sample of canned tuna was analyzed by the Kjeldahl method: 30.25 mL of 0.1200 N HCl was…

A: The given data contains, mass = 1.2525 g. Volume = 30.25 ml = 0.03025 L. Normality of HCl =0.1200 N.

Q: How could you discover if there is salt dissolved in the water?   A. dissolve an additional portion…

A: Salt dissolved in the water can be discovered as follows:

Q: Which statement is correct about the fractional distillation? the temperature of the distilling…

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Q: 1. Write balanced chemical equations for the dissolution of acetic acid (CH3COOH) and sodium acetate…

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Q: What does the process of recrystallization accomplish? 1) Place toxic chemicals into pure materials…

A: Recrystallization is the process of purification of organic compounds. Hence, the process of…

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Q: 6. Which of the following will yield this compound (image below) when heated with potassium…

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Q: The compound above would be soluble in A. Water B. Hexane C. NaCl/water solution D. More than…

A: The given compound is anthracene.

Q: What is fractional distillation and distillation with the use of a fractionating column; how it is…

A: By selective boiling and condensation, it is possible to separate components in a liquid mixture.…

Q: 6. In the Preparation of Detergent, Sodium hydroxide – react with. А. Техароп C. Alkyl Benzen…

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Q: Define crystallization process in sugar industry.

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Q: 5. When a liquid cools below its freezing point before crystallization occurs, the liquid a. is an…

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Q: which of the following solutions have the highest concentration? a. 0.4 mole of KOH dissolved in…

A: Number of moles of solute present in 1 liter of solution is known as molarity of the solution.…

Q: You perform a recrystallization of biphenyl, but when you cool the solution, no crystals form. What…

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Q: 5. Assuming your solute has good solubility properties in your recrystallization solvent, what is a…

A: Every time it is not possible to attain 100% recovery in recrystallization. Sometimes some of the…

Q: A sample consists of butyric acid, acetic acid and ethylene glycol. At a distilling temperature of…

A: Distillation is a chemical technique in which a mixture of two or more miscible liquids are…

Q: The boiling point rise of a 30%-wt NaCI aqueous solution at 1 atm is ______. a. 20°F b. 5°F c. 45°F…

A: The relationship between rise in boiling point (∆Tb) and molality of solution is given by  ∆Tb =…

Q: Multiple Choice 2. What is the mole fraction of NaOH in a solution that is made by dissolving 8.0g…

A: Mole fraction is calculated as,  xA=No. of moles of ATotal no. of moles We have given that we have…

Q: 18. Dehydroascorbic acid is the oxidized form of ascorbic acid 19. Iodine when present in solution…

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Q: iodine

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Q: A 0.25 g sample of an unknown solid is dissolved in 8.85 g of cyclohexane. The change in the…

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Q: 46. Which zinc solution is saturated? a. 1x10-5 M ZnCO3 (Ksp=1.0x10-10) b. 4.0x10-6M Zn(OH)2…

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Q: What physical property is used to determine what components will separate out during the process of…

A: Fractional Distillation  It is the process of separating the mixture into its component , the…

Q: 6. In a recrystallization, why is it important to dissolve the solute in boiling solvent instead of…

A: The correct answer is (a) To melt the solute.   In a recrystallization, the goal is to dissolve a…

Q: These modify the interfacial properties of substances. A. Surfactants B. Aerosols C. Nanotechnology…

A: Answer is A) Surfactants

Q: Question 10 A dissolved solute returns to its solid state. What is this process called? A deposition…

A: Solution 10) : Recrystallization is a purification technique for solid compounds. To perform…

Q: SOLUBLE if the first substance is soluble in the second substance and INSOLUBLE if it does not…

A: In the given question we have to show the first compound is soluble in second compound.  We know,…

Q: Why do proteins form precipitates under some conditions and gels under others?

A: Protein precipitation means process in which it is separated from any extra material that is mixed…

Q: Briefly explain the purpose of each item in the distillation set-up  a. Boiling chips –  b. DCM –…

A: Distillation is one of the separation techniques. It is used to separate the components from the…

Q: Why do oil and water co-distill? Explain.

A: The two or more compounds obtained in a chemical reaction with different mass ratios furnishes the…