Desalination is one possible process of extracting water from salty water ( from sea ) for industrial & domestic use. Briefly discuss and illustrate how to do it psychrometrically. attach the illustration pls
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Desalination is one possible process of extracting water from salty water ( from sea ) for industrial & domestic use. Briefly discuss and illustrate how to do it psychrometrically. attach the illustration pls
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- Hexanoic acid was added to an immiscible biphasic solvent sysem, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D1) of hexanoic acid in CCl4 with respect to water.An experiment was conducted to determine the effect of glucose on the freezing point of water. Experimental data showed thatthe freezing point depression of water in solution was –2.6°C when 1.0 g of glucose was dissolved in 10g of solvent. Calculatethe expected freezing point for such solution and compare the expected freezing point to the value found experimentally. Give aplausible explanation for any discrepancies. (M.W. of glucose= 180.16g/mol; i=1). Show all your work.Calculate the percent (mass-mass) of a solution prepared by dissolving 25.9g of NH4Cl in 376.2g of deionized water.(Show all work.)
- A solution of common salt in water is prepared by adding 50kg of salt to 200kg of water tomake a liquid density of 1250kg/m3. Calculate the concentration of salt in this solution as a: i) Weight(w/w)fraction (Ans: weight fraction 20%)Example: Calculation the weight of barium iodate Ba(IO3)2 if it dissolved in 500mL of distilled water (D.W) at 25 °C if M.wt of ppt = 487 g/mole and %3D Ksp= 1.57x10.One of the possible consequences of climate change is anincrease in the temperature of ocean water. The oceansserve as a “sink” for CO2 by dissolving large amounts of it.(a) The figure below shows the solubility of CO2 in water as a function of temperature. Does CO2 behave more or lesssimilarly to other gases in this respect?(b) What are the implications of this figure for the problemof climate change?
- An aqueous waste stream that has a maximum concentrationof 0.50 M H₂SO₄ (d=1.030 g/mL at 25C) will be neutralized by controlled addition of 40% caustic soda (NaOH; d=1.430 g/L) before it goes to the process sewer and then to the chemical plant waste treatment facility. However, a safety re-view finds that the waste stream could meet a small stream of animmiscible organic compound, which could form a flammable vapor in air at 40.°C. The maximum temperature of the causticsoda and the waste stream is 31°C. Could the temperature in-crease due to the heat of neutralization cause the vapor to ex-plode? Assume the specific heat capacity of each solution is 4.184 J/gK.Polyethylene glycol 400 (PEG400) is a nonvolatile liquid polymer, which when mixed with water canbe used as a base for parenteral formulations. The designation “400” means that the molecular weightof PEG molecules is approximately 400 g/mol. Preparation with water (ΔHv = 40.7 kJ/mol) requires that the two be mixed at 56 oC, at which the equilibrium vapor pressure of pure water is 16.5 kPa. a. If 105 g of PEG400 are added to 500 g of water at 56 oC, what will the boiling temperature of the solution be?a concentrated H2SO4 has the following composition specific gravity 1.84 and purity of H2SO4 is 97 percent by weight. express in mole/L
- An aqueous solution of sucrose (C12H22O11) is prepared by dissolving 7.4045 g in sufficient deionized water to form a 100.00 mL solution. Calculate the molarity of the solution. Do you mind showing work? I would assume that (given) gram weight (times moles present/divided by mole(s) of compound) then divided - again by compound weight will give a percentage, then divded by the .....that's where I'm a little lost. thanksCan you help me determine the required amount of 500mg ascorbic acid tablets to puverize the necessary amount of distilled water to make the desired concentration of stock solution (0.1M) Show complete and justifiable computations pls.A chart is prepared by plotting In Ksp versus 1/T, using data obtained by performing a lab experiment. Refer to the attached photo for reference on how to solve these equations. Particularly #5 should be useful: A linear fit of the data in the chart yields the equation y = (-5.0020x10^3)x+(2.100x10^1) with an R2 value of 0.9922. Determine the enthalpy (deltaH in kJ) associated with dissolving KNO3. Answer in scientific notation with appropriate sigfigs.
