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- 5 optimise, produce and market a commercial assay kit for the enzyme-linked determination of glucose in a range of samplesI. True or False. ____________4] Xylose gives a positive result with Molisch’s, Seliwanoff’s, & Bial’s-Orcinol tests.____________5] Aniline-acid oxalate can be use as a mobile phase for the development of the chromatogram.____________6] Ethanol (95%) & 10% TCA are used to precipitate glycogen from the solution.1.Which of the following correlations about the analyses of iodine and saponificationnumbers is/are incorrect?a. Alcoholic KOH: dissolve KOH to lipid sampleb. Hanus reagent: react with saturated lipid bondc. Reflux set-up: hasten reactiond. Blank titration: determine total mol of KOH2. A triacylglycerol (Sample X) was subjected to saponification analysis. 1.1 grams of thesample was refluxed with 5% alcoholic KOH and the refluxed solution was titrated with 17.2 mLof 0.44 M HCl titrant. The blank solution was titrated with 25.6 mL of the titrant.i. What is the saponification number of the sample? ii. Which of the following could be the identity of the sample? Show solutions pls a. Tripalmitin (MW: 807.3)b. Trilaurin (MW: 639.8)c. Triolein (MW: 885:4)d. Tristearin (MW: 891.48)
- Ksp for BaCrO4 is 1.17x10^-106 I- + BrO3- + 6 H+ ----- 3 I2 + Br- + 3 H2O Rate= k[I-]m[BrO3-]n[H+]p rate= (∆[I2])/(3*∆time) [I-] 0.010M [S2O3-2] 0.0010M H2O [BrO3-] 0.04M HCl 0.10M Starch Indicator (sec.) Volume, ml Volume, ml Volume, ml Volume, ml Volume, ml 1 10 10 20 10 10 1-3 drops 301.90 2 20 10 10 10 10 1-3 drops 213.28 3 10 10 10 20 10 1-3 drops 214.92 4 10 10 10 10 20 1-3 drops 86.45 Temperature of Reaction: _______20 C________ 1. Using the dilution equation (M1V1 = M2V2) calculate the concentration of the I-, BrO3- and the H+ (HCl) in the final mixture just prior to any reaction. 2. Calculate the rate for each experiment as explained in the background information. 3. Using the information above determine the rate law (m, n and p) for the reaction. Show all calculations/reasoning in your notebook. m_____________ n_________________ p…The deltaHsub of naphthalene (C10H8) is 72.6kJ/mol. What energy is needed to sublime a 100.0g of C10H8?
- A mixture of A, B, and C was added to a separatory funnel containing CH2Cl2 and 10% aqueous NaOH solution. Which compound(s) are present in the aqueous layer, and which compound(s) are present in the organic layer?The solubility of acetylsalicylic acid in ethanol at room temperature is 80 mg/ml. What is the minimum volume of ethanol needed to dissolve the aspirin obtained from 4.5 g salicylic acid (LR) and acetic anhydride if the yield was 65%? Show your work.3.Of the incubated 37 C sucrose samples, which solutions contained reducing sugars, you must include evidence to support your answers? 4. Which reaction condition was the most effective at hydrolyzing sucrose? Provide evidence to support this answer. Sucrose + water 3 minutes= blue color like the Benedict solution - 8 minutes= blue-greenish results - Sucrose + HCl 3 minutes= blue color, no changes. - 8 minutes= blue color, no change. - Sucrose + NaOH 3 minutes= blue color, no change - 8 minutes= blue color, no change. - Sucrose + Invertase 3 minutes=Change to orange & a little light green on top of the tube + 8 minutes=Dark orange +
- The Coca- cola is diluted and reacted with molybdate/metavanadate reagent before the %T is measured. True or False?Given the borax reaction: Na22B44O5(OH)4 × 8H2O(s) <=> 2Na+(aq) + B4O5(OH)42-(aq) + 8H2O(l) What would be the Ksp of borax at 40°C if the solubility of borax is 0.8 mol L-1 at that temperature?The Ksp for AG2SO4 is 1.2x10^-5 and the Ksp for CaSO4 is 4.93x10^-5. How do I find the Ca concentration?