1. Summarize the experimental data obtained in this experiment in the table below: Percent Recovery from Recrystallization (%) Compound Salicylic Acid Crude Yield Purified (g) Yield (g) 16 7.10 7.63 8.10 12.05 15.12 2.2065 Chemical Shift (ppm) 14 1.6759 2. In the saponification reaction performed in this experiment, the procedure calls for the addition of 15mL 5.0M NaOH solution and 1.50g methyl salicylate as reactants. Determine the volume of 2.0M H₂SO, required to exactly neutralize this solution. Referring to the experimental procedure, how does this compare with the volume used to reach neutralization? 1H 2H 1H 1H 1H 3. Using the experimentally obtained 'HNMR spectrum of salicylic acid shown below, complete the following table. 12 Integration 10 4 76 O 8 PPM 8 OH OH Percent Yield (%) Splitting 112 6 MP of purified material (°C) 163-164 4 2 Assignment 0

Why does the collision gas have to be inert?

46. 4G 71% 7:34 X Practice Exercise 29042023.pdf Practice Exercise 28042023 SCHB031 28 April 2023 (a). What is the common name and the IUPAC name for the homogeneous catalyst used in the hydrogenation of alkenes? (b). Using propene as example, show how the catalyst in (a) above can effect the conversion towards the corresponding hydrogenated product. Hint. Name all catalytic steps involved, draw structures of each intermediate, and give electron counts for all catalytic species. (c). Compare and contrast cobalt- with rhodium-based olefin hydroformylation catalysis. (d). Define the term olefin hydroformylation. (e). In the mechanism of the hydroformylation process: (i). What is the name of the organometallic reaction that introduces H₂ onto the catalytic complex? What about the one that sets free an aldehyde? (ii). What isomeric products can be produced from the hydroformylation of propene? (iii). How does a change in the catalyst system from Co to Rh affect the isomer distribution of…

Interpretate the results and identify the type of reaction involved.

1. Suppose that the formation of mullite from a mixture of alumina and silica powders is a diffusion-controlled process. How would you prove it? If the activation energy is 50 kcal/mole and the reaction proceeds to 10% of completion at 1400°C in 1 hour, how far will it go in 1 hr at 1500°C? and in 4 hr at 1500°C? Answer: 0.15, 0.284.

X-ray diffraction by the powder identified it not as barium phosphate, but as the mineral phase nabaphite: BaCl,(aq) + NaşPO_(aq) — NaBaPO - 9H,O(s)+2NaCl(aq) Nabaphite What is the theoretical yield of isolated product? theoretical yield: 0.8367 What is the observed % yield of isolated product? observed yield: 91.55 g %

(c) (d) Н (e) НО HO ОН н Na₂Cr₂O7 H2SO4, H2O 1. LiAIH4 2. H2O workup 3. PCC 4. (Ph)3PCH2 OH H2SO4 (catalytic)

For the Fischer esterification: Aside from improvements in laboratory technique, how might the percent yield of isopentyl ethanoate increase? (Hint: Consider the factors that control the equilibrium composition) Whose principle is involved?

Giving appropriate examples, explain how the two types of processes of adsorption (physisorption and chemisorption) are influenced by the prevailing temperature, the surface area of the adsorbent and the activation energy of the process?

Compare and contrast acid-base and electrostatic catalysis as both seem to implicate charge. Use an example to highlight the differences of these catalytic strategies