19. C-H+CH3-OH What is the unstable intermediate formed in the above reaction? O OH C-H OCH3 H -C-H OCH3 OCH3 -C-H OCH3 OCH3 C-CH3 OCH3 OCH3 C-OCH3 OCH3
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- Which step in the reaction would you expect to be rate-determining? 1. Vicinal diol to intermediate A. 2. Intermediate A to intermediate B. 3. Intermediate B to intermediate C. 4. Intermediate C to carbonyl product.Refer to the following reaction mechanism CH-c-OCH, slow + OH fast CH-C-OH CH0 CH,-C-OCH OH fast CH,C-O CH,OH The least stoble transition state has which structure? 8- A. CH,-C-OCH, B. CH3-C 0CH, C. CH,-C-OCH, D. CH, COCH, OHWhat amount of catalyst is necessary to significantly change the reaction rate of peroxide hydrogen decomposition? O A catalyst does not influence the rate of reaction O Equal to hydrogen peroxide O Half of hydroxide peroxide O Small DD 000 החמ F9 F10
- Which of the following choices is the key intermediate in the reaction shown below. FeCl, CI CH,CH, + Cl, CH,CH, Cl H CH,CH, CHCH, CHCH3 Cl CH,CH, HWhich reaction is faster c or d?Q27. The gas phase reaction between SiH2 and H20 was studied, and the following mechanism was proposed. M is a buffer gas which takes away energy as heat; you can treat it as a regular reactant. 1) SİH2 + H20 F SİH2-H2O* K 2) SİH2-H2O* + M SİH3OH Assuming that the first step is a pre-equilibrium step and the second step is rate-limiting, derive the rate law for this mechanism.
- Q1. Draw the reaction mechanism using curly arrows to show each bond made/broken in the production of biodiesel from vegetable oil. Q2. NaOH is in a catalytic amount, why is it not needed in equimolar amount to the Methanol?Which of the following are intermediates in the reaction below?HO .OH cat. H2SO4 H₂O cat. H2SO4 Complete both mechanisms above. BRIEFLY explain how the different reaction conditions (in the presence of acid) result in different products being formed. How does equilibrium play a role?
- Compound A is converted to compound B via a one-step reaction with an activation energy of +3 kcal/mol. The energy difference between Compound B and the transition state of the reaction is 7 kcal/mol. What is the AH° for the reaction? O -10 kcal/mol -4 kcal/mol +10 kcal/mol -3 kcal/mol +3 kcal/mol +4 kcal/molTrue or False, formation of the major product has a lower activation energy in the rate determining step than formation of the minor product. CI HCI 4 x.x - 80 °C CI major minor True FalseWhat are the intermediates of the following reaction?