A certain reaction with an activation energy of 205 kJ/mol was run at 545 K and again at 565 K. What is the ratio of f at the higher temperature to f at the lower temperature? Express your answer numerically using one significant figure. ► View Available Hint(s) fses fs45 Submit VGI ΑΣΦ ?

CollegeBoard AP Classroom A UPDATES AVAILABLE Unit 9 Progress Check: MCQ Do you want to install the updates now? 8 9 10 11 13 Reaction 1: X2Y 30 Reaction 2: K undergoes the two competing reactions represented above. The following graph shows the changes in energy that occur as the two reactions take place. Y Reaction 1 Reaction 2 Reaction Coordinate In an experiment done at a low temperature, one hour after the reaction started, Y was produced but almost no Z was produced. At a much higher temperature, one hour after the reaction started, both Y and Z had been produced. Which of the following best explains why very little Z was produced at the lower temperature? O Search or enter website name Energy

Given the a plot of ln k versus 1/T for a reaction yields a straight line with the equation, and the value of the least squares fit parameter: y = -2458x + 25.036               R2 = 0.9998 calculate the value of the activation energy for the reaction in kJ/mol.   Select one: a. 20.44 kJ/mol b. 24.58 kJ/mol c. 2044 kJ/mol d. 2458 kJ/mol

1) How is rate of reaction represented? Give some examples with representations 2) Describe what is iodine clock reaction and chemical kinetics in detail , their purposes, what are the uses and outcomes of the this reaction , why we are performing this reaction 3) practically how order of the reactions can be determined explains along with examples) 4) Why is k (constant ) important in chemical kinetics, why it is used?