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- Give advantages of Ziegler–Natta catalysts ?The table below presents thermodynamic data for the dissociation reaction of acetic acid, CH3COOH And of acetic trichloroacetic acid CCl3COOOH. CH3COOH(l) + H2O(l) ⇄ CH3COO(aq)− + H3O(aq)+ CCl3COOH(l) + H2O(l) ⇄ CCl3COO(aq)− + H3O(aq)+ a. What is the value of °ΔS in C°25 To the dissociation reaction of acetic acid? show calculations. b. What is the value of Kc in 25oC To the dissociation reaction of trichloroacidAcetic? Show calculations. b.2. Explain the difference between the Kc value of CCl3COOOH and that ofCH3COOH based on acid structure. c. Will the value of Kc at 35 ° C for acetic acid, CH3COOH, be small / equal/ Greater than its value at 25 ° C? Explain. d. Explain the negative sign of ΔS to the dissociation reaction of triacidAcetic chlorine, CCl3COOOH. Kc (25°C) ΔS° (J/mol·K) ΔH° (kJ/mol) ΔG° (kJ/mol) 1.77×10 -5 -2.51 27.12 CH3COOH -13.66 3.93 CCl3COOOHThe solubility of Lorazepam (a tranquilizer found in Emotival , Lorax, Wypax, and other prescription medicines) is 0.08mg/mL and 2.62mg/mL, in water and chloroform, respectively. Estimate the partition coefficient of lorazepam between chloroform and water. 3. The solubility of benzoic acid at 25 degrees Celsius in water and diethyl ether is 3.35 mg/mL and 0.353 g/mL, respectively. Estimate the percent recovery of benzoic acid in the organic phase, if a solution of benzoic acid in water is extracted with an equivalent volume of ether. [HINT-pay attention to the units] 4. The solubilities of cholesterol in water and chloroform are 0.550mg/100mL and 1.00g/5.25mL, respectively. Estimate the partition coefficient of cholesterol between chloroform and water. [HINT- units] What conclusion can be drawn about the polarity of cholesterol?
- The table below presents thermodynamic data for the dissociation reaction of acetic acid, CH3COOH And of acetic trichloroacetic acid CCl3COOOH. CH3COOH(l) + H2O(l) ⇄ CH3COO(aq)− + H3O(aq)+ CCl3COOH(l) + H2O(l) ⇄ CCl3COO(aq)− + H3O(aq)+ Kc (25°C) ΔS° (J/mol·K) ΔH° (kJ/mol) ΔG° (kJ/mol) 1.77×10 -5 -2.51 27.12 CH3COOH -13.66 3.93 CCl3COOOH Explain the negative sign of ΔS to the dissociation reaction of triacidAcetic chlorine, CCl3COOOH.Deduce the equilibrium ratio of NH4+ to NO3- at a pH of 6.0 (a) for aerobic water having a pE value of +11, and (b) for anaerobic water for which the pE value is -3.Write about the Biological Electrocyclic Reaction and Sigmatropic Rearrangement:
- For the reaction 5Ce4+ + Mn 2+ + 4H2 O → 5Ce3+ + MnO4- + 8H+ , given E0 (Ce4+ /Ce3+ ) = 1.70V,E0 (MnO4- /Mn2+ ) = 1.507V, calculate ΔG0 for this reaction ?Extraction of DNA involves the use of a 1 M phosphate buffer (1-liter volume) having the hydrogen ion concentration of 6.165950019 x 10-9 M. Three pKa of phosphoric acid are available Concentrated phosphoric acid (85% w/w; Sp. Gr. = 1.70; MW = 98 g/mol) Sodium dihydrogen phosphate monohydrate (MW = 138g/mol) Sodium biphosphate heptahydrate (MW = 268g/mol) Tribasic sodium phosphate monohydrate (MW = 182 g/mol) Sodium hydroxide pellets (40 grams/mol) Question: What is the pH of the solution? (answer in two decimal places) How much of the weak acid component should be used? (Note for answer: Round to the nearest hundredth and include the unit such as "grams or milliliters"; Ex. 100.00 grams or 100.00g for weight & 100.00 milliliters or 100.00 mL for volume) Question: What is the suitable buffer component to be used? (Note for the answer: Separate the two components with “and”; Ex: Ammonia and Ammonium chloride) Question: How much of the salt component should be used?…Explain the difference in nephelauxetic effect of the Racah parameter (B) for [Co(CN)6]3- = 460 cm-1 and [Co(NH3)6]3+= 615 cm-1.
- If the concentration of Sn2+ ions in a solution of Sn(OH)2 was measured to be (1.60x10^-3), what is the Ksp value for Sn(OH)2? Note: Your answer is assumed to be reduced to the highest power possible.The Racah parameter B for [Co(CN)6]3−=460cm−1, and [Co(NH3)6]3+= 615cm−1. Explain the difference in nephelauxetic effect. Thank you!will addition of 300ml 0.005M agno3 to 200ml of 0.004M Al2(SO4)3 result in oreciptation of Ag2SO4 if Ksp of Ag2SO4 is 6.65x10^8?