The Dumas tube containing the volatile liquid vapor is removed from the boiling water bath and allowed to cool to room temperature when the volatile liquid has entirely vaporized. Why is it important to ensure that the cooled Dumas tube with unknown volatile liquid vapor to equilibrate with the  room temperature?

Q: What is the  of effect of stirring  on the freezing point of pure acetic acid? why?

A: 1) The freezing point of pure acetic acid is 16°C. Stirring at the freezing point of pure acetic…

Q: A small storage cabinet 2m *2m*3m high contains an open 208-L drum of aqueous TCE at a concentration…

A: Given, Volume of drum = 208 L TCE concentration =120mgL Temperature, T = 25°C =(25+273)K=298 K

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A: "Like dissolves Like" which means polar solute dissolves in polar solvents and non- polar solute…

Q: show-all-working-explaining-detailly-each-step Answer should be typewritten using a computer…

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Q: Illustrate dissolution of the ionic solid NaCl in water?

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Q: How does temperature affect the solubility of a solid in a liquid?How is this temperature dependence…

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Q: Sketch the solid-liquid phase diagram of 2,6-xylenol and tert-butanol. Pure tert-butanol has a…

A: For the purpose of convenience, tert-butanol has been considered as liquid A and 2,6-xylenol has…

Q: does the boiling point of liquid solution independent of its composition (yes or no?)

A: To explain: does the boiling point of a liquid solution independent of its composition.

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A: Henry's law states that concentration of dissolved gas is directly proportional to the partial…

Q: Which of the following statements best describe a minimum azeotrope? I. Minimum azeotrope boils at…

A:

Q: Why is salt not soluble in isopropyl alcohol?

A: Alcohol can be defined as the organic compound in which hydroxyl group is attached to carbon atom.

Q: Topics] The normal boiling point of methanol Is 64.7°C. A solution containing a nonvolatile solute…

A:

Q: The lower boiling point component will evaporate The vapor above a boiling liquid mixture only con…

A: Boiling point is a temperature at which vapour pressure of liquid becomes equal to atmospheric…

Q: At 1 atmosphere, saturated water and vapor coexist at 373.12 K per the NIST Fluids Database. If the…

A: Given that, at 1 atm and 373.12 K, saturated water and vapor coexist. The molar volume of the liquid…

Q: How would you find the vapor composition for when a mixture of 1,2-dimethylbenzene and methylbenzene…

A: Given: Mixture boils at 90 oC and 0.5 atm. Vapour pressure of methylbenzene at 90 oC = 53.3 KPa. And…

Q: elevation in boiling point depression in freezing point O elevation of vapour pressure O osmotic…

A: The question is based on the concept of solutions. we have to identify which of the given property…

Q: Using your knowledge of the “like dissolves like” generalization, determine which solute ethanol…

A: Like dissolves like means polar solute dissolves in polar solvent while non-polar solute dissolves…

Q: 12. Recall that the freezing point is depressed by -1.86 °C per mole of solute per kg of water.…

A:

Q: Reflux is the process of heating a reaction mixture and condensing the solvent vapors back into the…

A: Boiling is the rapid vaporisation of a liquid that happens when it is heated to its boiling point,…

Q: 1. An organic student did an experiment extracting benzoic acid from a mixture of other organic…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: explain why the boiling point of a two component mixture rises slowly throughout a simple…

A: A temperature is not absolute. When you measure a temperature, you are measuring a distribution of…

Q: An oil boils at a lower temperature when steam is added to it because: O the water dissolves in the…

A: We have to find the reason for why the boiling point decreases when steam is added to oil.

Q: A 100.0 g sample of phenol, CHO, (MW = 94.11 g/mol, Kmp=7.40 °C/molal, MP = 43.0 °C) is contaminated…

A: Given - Mass of phenol = 100.0 g             Mass of sodium chloride = 7.000 g             Molar…

Q: 28. What will be the value of freezing point depression constant of cyclobutene having freezing…

A:

Q: When a solution is created, solute-solute interactions must • and solvent-solvent interactions must…

A: A solution is a form of homogenous combination made of two or more components in chemistry. A solute…

Q: Sometimes crystallization does not occur, even after cooling the solution in the ice bath. Describe…

A: Crystallization is a fundamental technique in chemistry used for the purification and isolation of…

Q: How does the data display that water is a good solvent for recrystallization of benzoic acid?…

A: Temperature (C).    Solubility(g benzoic acid/L water) 0                                     1.7 25…

Q: A A certain liquid X has a normal freezing point of -5.60 °C and a freezing point depression…

A: This is colligative property,  Depression in freezing point.  Colligative properties depends on no.…

Q: 1. State whether each of the following statements is true or false as it is written. Please justify…

A: Answer-1Some properties of the solution depend on the number of moles of solute present in the…

Q: please help on this problem

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Q: The vapor pressures of two volatile organic compounds, compound 1 and compound 2, at 20 °C are 82.2…

A:

Q: Why does the temperature not change while the pure cyclohexane is freezing? This question is based…

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Q: Near room temperature and pressure, ethylbenzene and benzeneare miscible liquids. Assume a mixture…

A: Near room temperature and pressure, ethylbenzene and benzeneare miscible liquids. Assume a mixture…

Q: Draw a temperature-composition diagram for the acetone-chloroform mixture, wherein the boiling…

A: The temperature-composition diagram indicates the changes in the composition of a liquid and vapor…

Q: 2.67 g of pure acenapthene (AN) is completed dissolved in 15.1 mL of hot ethanol at 70∘C. If this…

A: 2.67 g of pure AN is completed dissolved in 15.1 mL of hot ethanol at 70 °C. If this hot solution is…

Q: A certain substance X condenses at a temperature of 128.4 °C. But if a 800. g sample of X is…

A: we need to calculate the value of molal boiling point elevation constant of X

Q: Assuming Ca3(PO4)2 has a solubility of x at 25 °C, the Ksp expressed in x at 25 °C is ) Ksp = 36x³ )…

A: The solubility product constant is similar to equilibrium constant. It is applicable when a solid…

Q: One way to distinguish between solutions and colloids is to test them with a beam of light. Light…

A: Colloids have particle size range of 1nm-1000nm which is much greater than that of true solution.…

Q: In the technique of recrystallization, one step involves heating the solvent containing the solute…

A: Solution -

Q: If I am determining the melting point of a water sample that contains NaCl in it, what would the…

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Q: Using the following figure, predict the boiling point of the initial drops of distillate of a…

A: Given the distillate contains a mixture of 0.8 Mol fraction of toluene and 0.2 Mol fraction of…

Q: How can we calculate the Vapor Pressure of a Two-Component Solution?

A: The measure of ability to material to convert into the gaseous state (or) vapor state is known as…

Q: What is the normal boiling point of this solvent?

A:

Q: Substance State KCo,

A: State of K2CrO4: Potassium chromate is a yellow crystalline solid. It is soluble in water.

Q: The experimental data in the table was collected during a freezing point depression study where BHT…

A:

Q: When performing a recrystallization of an impure solid, why is it important to allow the heated…

A: Recrystallization is thy method of separation of impure compound or purify compound by adding…

Q: 0.5 5千 59 68 55 1.0 57 52 1.5 50 48 47 2.0 49 46 47 2.5 48 45 46 3.0 42 44 45 3.5 41 43 42 4.0 43…

A: a