Determine the pH of the solution produced in the reaction flask when 25.00mL of 0.100 M NaOH has been added to 25.00 mL of 0.100 M HC
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Determine the pH of the solution produced in the reaction flask when 25.00mL of 0.100 M NaOH has been added to 25.00 mL of 0.100 M HCl
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- Please choose the correct answer for each question: 1. Activity of a gas in equilibrium with solution is ______? A. its partial pressure; B.1.0; C. its molar concentration; D. 0.0 2. During a sorption procedure, the substance transferred from the gas or liquid phase to the solid phase is called ______ A. sorbent; B. sorbate; C. partition; D. none of the above 3. When a chemical has a lower KOW, it is more ______ A. hydrophobic; B. hydrophilic; C. more absorbable; D. less absorbable 4. _____ occurs on the adsorbent surface A. Adsorption; B. Sorption; C. Absorption; D. Adsorption and absorption 5. _____ addresses the change in the amount of a substance of interest with time. A. The equilibrium approach; B. The kinetic approach; C. Henry’s Law; D. Freudlich isotherm equationd) Calculate total hardness in ppm of a solution of both 55 mg/L Al2(SO4)3 and 45 mg/L Mg(NO3)2.Q2: A drop of liguid foluen is kept al uniform temperkure t 299 K and is suspended in air by a fine wire. The initid radius at r= 2mm. The vapor pressure of foluene 299K is f=384 Kfe and the density of liguid toluene is 366 ky Im 3. Derive equation for the time tp for the drop b evupurete Completely in a large volume of still air Calculate the tine in seconds for Complete evaporahion.
- The capillary rise (height) in mm of an ethanol having a viscosity of 0.032 J/m2. The tube has a diameter of 0.1 mm and the density of the fluid is 0.71 g/cm3During a steady flow process, the pressure of the working substance drops from 200 to 20 psia, the speed increases from 200 to 800 ft/s the internal energy decreases 20 BTU/lb and the specific volume increases from 2 to 10 ft³/lb. No heat transferred. Determine the following: a)AKE in ft-lb;/Ibm b)APE in ft-lb/lbm c)AW: (flow work) ft-lb:/lbm d)AH in BTU e) Net work in hp for 15 lb/min of fluid (use mass flow rate for this item only)Example 2: NaCl equivalent concentration 20,000 ppm. Temperature of %3D concentration 75°F. Find the Resistivity of the solution.
- The pOH of a basic solution is 3.33. What is pH?The topic is all about thin-walled pressure vessels: Please use pen and paper and show the conversion in the solution.10-kg of R-134a fill a 1.348-m3 rigid container at an initial temperature of 240oC. The container is then heated until the pressure is 200 kPa. Determine the final temperature and the initial pressure
- Predict whether the following reactions would occur spontaneously in aqueous solution at 25°C. Assume that the initial concentrations of dissolved species are all 1.0 M. (a) Ca(s) + Cd²* (aq) → Ca²* (aq) + Cd(s) (b) 2B1¯(aq) + Sn²*(aq) – Br2(1) + Sn(s) (c) 2Ag(s) + Ni²*(aq) → 2Ag*(aq) + Ni(s) (d) Cu*(aq) + Fe**(aq) Cu²*(aq) + Fe²* (aq) 2+3. Some industrial spent catalyst was tested as adsorbent material in a batch experiment. The data are reproduced in the following table. Determine the Final Conc., Ce (mg/L) 14.88 9.55 1.89 0.58 0.44 0.61 0.36 Uptake, q (mg/g) 8.80 8.41 7.33 6.15 5.68 4.92 3.79 a. Determine the coefficients for these data assuming a Freundlich isotherm applies. b. Determine the coefficients for these data assuming a Langmuir isotherm applies. c. Which isotherm model provides a better fit to the data? Explain.) Calculate the concentration of hydroxide ions *Select a concentration between 0.10 and 0.58 d) Calculate the pH of the methylamine solution