Here is a reaction energy diagram for a hypothetical reaction in which a reactant species A converts into a product species E. A - E E Reaction Progress Is the overall reaction exothermic or endothermic? And which step is the rate determining step? Energy

Consider the following reaction coordinate diagram. Energy (kJ) 50 45 40 30 20 15 10 5 0 Extent of reaction (a) Which is the rate-limiting step in this reaction?

Some measurements of the initial rate of a certain reaction are given in the table below. [N-] [H.] initial rate of reaction 2.27 M 1.81 M 16.0M/s 2.27 M 0.429 M 0.899 M/s 9.19 M 1.81 M 262. M/s Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 3 significant digits. Also be sure your answer has the correct unit symbol.

C2H5Br + OH– → C2H5OH + Br–    Which is true if the rate law Rate =k[C2H5Br] [OH–]    Which is true if [OH–] doubles?    A.) the reaction rate will also double  B.) the RR will remain the same   Which is false?  A.) the rate of Br- is equal and opposite of OH- rate is consumed  B.) C2H5Br will be consumed at the same rate as OH–

Second Year Second Semester 2018-2019 First Month Exam School of Chemistry Organic Chemistry QI/ Consider the following reaction: "OCICH,, Br (CH,,COH ン しい」 What happens to the reaction rate guh each of the following changes? is (1) The concentration of OC(CH is decreased.(2) The base is changed to "OH. (3) The halide is changed to CH;CH:CH2CH,CH(Br)CH3. (4) The leaving group is changed to I.

Find a reaction that is typically facilitated by a catalyst.  Write a paragraph (2 at most) detailing what the reaction is, what it is used for, what the catalyst is, how the catalyst increases the reaction rate, and how fast the reaction is with the catalyst.

Consider the reaction R  P. Check all of the following that are true when a catalyst is added to the reaction mixture. The Ea for R  P decreases. The value [P] / [R] increases .The rate of reaction P  R increases. The rate of reaction R  P increases.

Consider the following hypothetical reaction coordinate diagram with stages represented by I, II, and III, and choose the true statement about the steps in the forward and reverse mechanisms. Which is a TRUE statement? a) Step II --> III is faster and less energetically favorable than step II -->I b) Step II --> III is faster and more energetically favorable than step II -->I c) Step II --> III is slower and less energetically favorable than step II -->I --> Ill is slower and more energetically favorable than | || ||| d) Step II step II -->I

Which of the following statements is TRUE regarding the energy profile shown below? in Reaction Progress O The reverse reaction is faster than the forward reaction. The reaction mechanism involves one transition state, two intermediates, and one catalyst. O The forward reaction is a catalyzed reaction with E₂ < 0. The reaction proceeds via a two-step mechanism where the 2nd step is the rate determining step. Energy

consider the reaction R  P. Check all of the following that are true when a catalyst is added to the reaction mixture. The rate of reaction P  R increases. The Ea for R  P decreases. The rate of reaction R  P increases. The value [P] / [R] increases.