12 If strong-base anion exchange resin is applied to treat raw water with silicate, the pH of raw water should be A acidic B. neutral c. basic D. no demanding a In electrodialysis process with polarization, fouling layer occurs in the A. concentrate chamber; anion B. concentrate chamber; cation c. dilute chamber; anion D. dilute chamber; cation side of membrane.
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- Matching Type Sample Type of Solution A. Isotonic 1. Sample A (1 cup syrup) 2. Sample B (1 ½ tablespoon syrup) 3. Sample C (purely distilled water) B. Suspension C. Hypotonic D. Hypertonic2. Which of the following correctly describe the colligative properties of aqueous solutions? I. Vapour pressure increases when nonvolatile solute molecules are added. II. Boiling point increases when nonvolatile solute molecules are added. III. Freezing point increases when nonvolatile solute molecules are added. IV. Osmotic pressure increases when nonvolatile solute molecules are added. A. II only В. П аnd I C. II and IV D. All of the above2. Absorbance Data Table Absorbance Concentration 0 mg/dL = blank %3D 0.09 Oi17 0.28 25 mg/dL 50 mg/dL 75 mg/dL 100 mg/dL 035 Unknown solution 6.14 3. Attach a graph of your standard curve. Show the point for the unknown solution on your graph, and determine the concentration of the unknown. Enter this value below (include correct units). Concentration of the unknown solution
- 4. Attheendoftheprocedureforthisexperiment,arecrystallizationisdoneina mixed solvent system. Which solvents are used? In which solvent is caffeine LESS SOLUBLE? Briefly explain the significance (i.e. why it is done) of adding one of the two solvents, “to turn the solution faintly cloudy,” during the recrystallization1. What are the different factors that affects the quality of water? 2. What is the role of a coagulating agent in the process of purification?only possible solution DISCUSSION filtration and any other Discuss sterilization technique Autoc auva an.. Filtration Compare each pH measurement 1d be dono ifnULia Why didw add agar +he Any other?
- 1. How many mL of distilled water must be added to make the Benzalkonium chloride preparation isotonic? 2. How many mL of 0.9% NaCl must be added to make a 100mL solution?1. Calamine Lotion is classified as a suspension. What is a suspension? A. It is a disperse system in which solid, vehicle-insoluble particles (internal phase) are uniformlysuspended by mechanical agitation and formulation design throughout the liquid vehicle(external phase).B. It is a clear, flavored, sweetened, hydroalcoholic liquid oral preparation that usually containeither potent or unpleasant tasting drugsC. It is a concentrated aqueous solution containing one or more sugar components, chiefly sucrose,or sugar substituteD. It is a viscous oral liquid containing one or more medicament dissolved in a vehicle that usuallycontains high proportion of sucrose or other sugars.1. COMPARE AND CONTRAST the GEL FILTRATION and ISOELCTRIC PRECIPITATION in terms of the principles governing their functions. Explain it thoroughly and do not just cope it from somewhere.
- 2. DECOLORIZATION Dissolve 1g of brown sugar in 15 ml. dist. Water in a small beaker and divide the solution into two equal portions. Place one portion in a test tube and add 1 g boneblack or activated charcoal and gently boil over a small flame for about 2 minutes (replace water lost by evaporation). Allow to cool and filter. How does the filtrate compare with the original solution? What property boneblack is exhibited in this procedure? How do you define this property? 3. CRYSTALLIZATION Mix in a beaker 2g of benzoic acid and 10ml of dist. Water. Boil gently over a flame for about 2 minutes, replacing water lost by evaporation every now and then. Filter the solution while still hot if any residue shows, if none, directly immerse the tube in a beaker of cold water (used ice water if available). Let stay for about 5 min. and observe. Are crystals formed? How do they compare with the original in texture in size of crystals? Define crystallization How can crystallization be carried? 4.…Table 2. Volume of BSA, protein content, and absorbance readings of reference solutions Solution Volume of BSA standard solution (μL) Protein content(μg/mL) Absorbance value At 595 nm 1 0 0 0 2 10 1 0.022 3 30 3 0.065 4 50 5 0.106 5 70 7 0.178 6 100 10 0.299 7 120 12 0.380 Make a graph by plotting the absorbance values versus the BSA protein content (in μg) for theseven reference solutions. When constructing the graph, be…1. Tools that do not need to be brought when sampling is…a. thermometerb. Hygrometerc. PH meterd. DO meter 2. In the deposition method, one of the conditions that must be met is…a. The precipitate has a high solubility or solubility productb. The precipitate formed must be quite difficult to dissolvec. The precipitate formed does not have to be quite pured. Free precipitate form
