A carbocation is an intermediate formed in certain organic reactions. Chemically, what can happen to a carbocation? A carbocation can Select one: O A....bond to a nucleophile. B. ...lose a beta hydrogen ion to form a pi bond. O C. ...rearrange to a more stable carbocation. O D. All of the above
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- Consider the reaction energy diagram shown below. The reaction shown is reversible, it can proceed from reagents-> products or produCts->reagents. In which direction do you think the reaction has a higher rate constant, k? reactants Reaction pregresk O a. both k's are the same. b. reactants-> products has the higher k. C. reactants to products always has the larger k d. products -> reactants has the higher k. Posential cncrgy47. What intermediate is formed in this reaction? НА H. H. a d. OH OH H. H. H. H.A catalyst: a. Actually participates in the reaction b.changes the equilibrium concentration of the products c. Does not affect a reaction energy path d. always decreases rate of a reaction e. Increases activation energy for a reaction a or c???
- For a reaction that generates both kinetic and thermodynamic products, which of the following is associated with the thermodynamic product? O It involves the lower energy transition state. O tis formed faster. O Itis favored with cold reaction conditions. O It is the more stable product.Choose the energy diagram below that represents the described reaction. m.mmmu progres of reaction C progress of reaction progrem of reaction progress of reaction D step reaction with two (2) intermediates 1. a reaction progress of reaction 2. a three (3) - 3. has no reaction intermediate 4. a two-step exothermic reaction whose rate- determining step is the first stepWhat is the effect of halving the amount of ethanol for this reaction? HO. Br heat the reaction rate decreases by half the reaction rate stays the same A. В. C. the reaction rate doubles D. the reaction rate quadruples ов OD
- 1. What is the main functional group of the organic molecule?*A. Aldehyde functional group b. Carboxyl functional group c. Hydroxyl functional group d. Carbonyl functional group 2. What structure will characterize the intermediate in this reaction mechanism, after the leaving group is removed?*A. Change in conformation b. Rearranged orbitals c. Oxonium formation d. Carbocation formationWhat does a catalyst do? Increases the rate of reaction O a. O b. stabilizes a reaction Increases the concentration of the reaction Od. cools the reaction downPredict the products by showing the reaction mechanism (arrow pushing) of the given diagram.1. Cl2; H2O2. HBr3. BH3 THF; H2O, NaOH
- The reaction diagram shown represents which type of reaction? Reaction Coordinate a. Two-step, slow, exergonic ab. Two-step, fast, endergonic o. One-step, fast, endergonic od. One-step, fast, exergonic e. One-step, slow, exergonic EnergyAs the temperature of a reaction is increased, the rate of reactions increase because the CA. reactant molecules collide less frequently OB. activation energy is lowered C. reactant molecules collide with greater energy D. reactant molecules collide less frequently but with greater energy OE. activation energy is increasedComplete each sentence by matching with the correct statement.Increasing the concentration of a reactant: a. Increases the frequency and energy of molecular collisions which speeds up the rate of the reactionb. Reduces the energy and frequency of the collisions thus slowing down the rate of the reactionc. Increases the frequency of molecular collisions thus speeding up the rate of the reactiond. Increases the activation thus speeding up the rate of the reactione. Lowers the activation energy and speeds up the reactionf. Gives the molecules more energyAdding a catalyst to a reaction:a. Increases the frequency and energy of molecular collisions which speeds up the rate of the reactionb. Reduces the energy and frequency of the collisions thus slowing down the rate of the reactionc. Increases the frequency of molecular collisions thus speeding up the rate of the reactiond. Increases the activation thus speeding up the rate of the reactione. Lowers the activation energy and speeds up the…