13. Which one of the following represents the transition state of the rate-determining step of the reaction shown below between tert-butyl bromide and methanol in which isobutylene is formed? The reaction takes place with an E1 mechanism. The overall reaction is- H3C H3C CH3 H3C CH3 Omm Θό -Br Ꮎ -Br H A CH3 H3C B H3C H3C SOOH-CH2 CH3 SOHCH2CH H -Br H (CH3)3C-Br (CH3)2C=CH2 + HBr с D CH3OH CH3 CH3

In your own words, please describe the following reaction mechanism in detail, and also describe any and all products that form. CH,O CH;OH CH3

Choose one.

4. Outline a detailed mechanism for the reaction below. Identify the abbreviation for the reaction mechanism. НО H3PO4

State the mechanism of the following reactions (NOTE: draw theproper settings where applicable)

Draw the structure of each transition state in the two-step mechanism for the reaction, CH3CH2CH2OH + H2SO4 ->CH3CH = CH2 + H2O.

Chloromethane reacts with dilute sodium cyanide (Na+ -C‚N) chloromethane cyanide acetonitrile chloride. When the concentration of chloromethane is doubled, the rate is observed to double. When the concentration of cyanide ion is tripled, the rate is observed to triple. Write the rate equation for this reaction.

Mechanism: A reaction mechanism for the following reaction is shown below. H+ CEN CEN: N-H || -C-OH H₂O, H* Step 1 wand woled mot ozsm E Step 3 N-H C-OH C=N-H Step2 C=N-H H-O-H H₂O motno vgiene fesrigid onlt to smotnos -C=N-H a) The overall reaction is an example of b) Step 1 is c) Step 3 is d) Draw in the curved arrows for each step. e) Identify the nucleophiles and electrophiles where appropriate. f) Fill in the reaction energy diagram. H₂O: rate determining step to noipojovo hamwell sit 5(emise erit voittons 10) vanas mi sdgin al rainW di of E^ reaction progress →

Consider the following reaction mechanism. Step 1: 2X + Y- W + 2 Z fast Step 2: Z- U+ V slow Step 3: V+Z-2 W + Y fast The rate-limiting step is Step because. 1; the first step must occur before any others can occur O 2; it uses a product of the first step O 3; the last step is always the rate-limiting step O 2; it is the slowest step

Correctly draw the reaction mechanism of U-W