Write one difference in each of the following:(i) Lyophobic sol and Lyophilic sol(ii) Solution and Colloid(iii) Homogeneous catalysis and Heterogeneous catalysis
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Q: The solubility is 12.8g in 100mL of ethanol at 0 degrees C, and 46.4 g in 100mL of ethanol at 60…
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Q: When 2.0 g of aspirin was shaken up in a flask containing two immiscible liquids it was found that…
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Q: A friend of yours who is taking a biochemistry class saysthat salting out works because the waters…
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Write one difference in each of the following:
(i) Lyophobic sol and Lyophilic sol
(ii) Solution and Colloid
(iii) Homogeneous catalysis and Heterogeneous catalysis
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- List 7 real-life applications in Chemical Equilibrium in a Liquid Phase and list 7 real-life applications in Distribution of a Solute between Immiscible Solvents.A friend of yours who is taking a biochemistry class saysthat salting out works because the waters of hydration thatsurround the protein prefer to surround the electrolyte asthe electrolyte is added; therefore, the protein’s hydrationshell is stripped away, leading to protein precipitation. Anotherfriend of yours in the same biochemistry class saysthat salting out works because the incoming ions adsorbtightly to the protein, making ion pairs on the protein surface,which end up giving the protein a zero net charge inwater and therefore leading to precipitation. Discuss thesetwo hypotheses. What kind of measurements would youneed to make to distinguish between these two hypotheses?Water and 1-butanol are only partially miscible, so that when the two liquids are mixed, separate phases are formed. A mixture is prepared, in which the volumes of the aqueous and organic phases are equal. Ethanoic acid is then added to the mixture. The concentration in the aqueous phase is 0.094 mol dm-3 and in the organic phase 0.014 mol dm-3 . Additional solvent is then added such that the volume of the aqueous phase becomes double that of the organic phase. What are the new concentrations?
- A dissolution is prepared dissolving 396 g of sacarose (C12H22O11) in 624 g of water. What is the vapor presurre at 30ºC? The vapor presurre of water at 30ºC is 31.8 torr and sacarose is a non-volatile solute.Write the differences between physisorption and chemisorption with respect to the following: (i) Specificity (ii) Temperature dependence (iii) Reversibility and (iv) Enthalpy changeIn gravimetric analysis, volatile electrolyte is used in peptization step a. to form small nucleib. to easily dry precipitatec. to reprecipitate the analyteexplain please
- When 2.0 g of aspirin was shaken up in a flask containing two immiscible liquids it was found that the mole fractions in the two liqu ids were 0.11 and 0.18. When a further 1.0 g of aspirin was added, it was found that the mole fraction in the first liquid increased to 0.15. What would you expect the mole fraction in the second liquid to become?The solubility is 12.8g in 100mL of ethanol at 0 degrees C, and 46.4 g in 100mL of ethanol at 60 degrees C. What is the maximum percent recovery that can be achieved for the recrystallization of acetanilide from ethanol?The following evidence was obtained from an experiment to determine the solubility of calcium chloride at room temperature. A sample of saturated calcium chloride solution was evaporated to dryness, and the mass of solid residue was measured.EvidenceVolume of solution (mL) = 15.0Mass of empty beaker (g) = 90.54Mass of beaker and residue (g) = 101.36The solubility of calcium chloride is g/100 mL
- In a separatory funnel, if "The layer separating the two solvents (organic & aqueous) is not visible" Describe two methods by which you can solve this problem and locate the separation between the 2 layers.Explain why the presence of a non volatile solute in solution reduces the tendency of the solvent molecule from escaping.A 690 g of 59% strontium bromide solution is cooled from 60 oC to a certain temperature. Upon addition of around 2 g of strontium bromide, excess solute above saturation started to crystallize. Total recovered crystals is 146.003 g. At what temperature is the solution cooled?
