b Which step is rate determining Circle one step 1 step 2 step 3 c Write out

B which step is rate determining circle one step 1

This preview shows page 10 - 15 out of 16 pages.

b) Which step is rate determining? c) Write out the expression for k in the overall rate law in terms of the rate constants for the individual steps:
Image of page 10
243) Consider the reaction A + B --> 2C. Given the following data, write out the overall rate law. Include the value of k and its units.[A] M[B] Mrate (M/s)7.0x10-41.4x10-32.8x10-33.5x10-37.0x10-37.0x10-32.0x10-54.0x10-51.6x10-4rate =8Expt123330) The blood volume in a cancer patient was measured by injecting 5.0 mL of Na2SO4(aq)labeled with 35S (t1/2= 87.4 d) that undergoes first order decay. The activity of the sample when it was injected was 300 μCi. After 23 min, 11.6 mL of blood was withdrawn from the patient. The activity of the blood sample was found to be 0.75 μCi. What is the volume of blood in the patient? 8
Image of page 11
CHEM230_ W16_PREP_kinetics p 4 TiCl4 (g)+ O2 (g)--> TiO2(s)+ 2 Cl2 (g)Ho= -218.6 kJ248) Consider the reaction of titanium tetrachloride with oxygen shown below. The rate of the reaction is studied and found to be first order in pressure titanium tetrachloride and zero order in the pressure of oxygen. An Arrhenius plot (ln k vs. 1/T) is used to find A = 4.4x1051/s and has a slope equal to -13110 Kelvin. b) Write out the rate law for the reaction. Include the value of k @ 200K and its units. d) How will each of the following changes affect the rate of the reaction. (Circle increase, decrease, or no impact for each change)i) Increasing the pressure of TiCl4will increase, decrease, have no impact on iii) Increasing the temperature will increase, decrease, have no impact on ii) Increasing the pressure of oxygen will increase, decrease, have no impact on iv) Removing chlorine gas as it is formed will increase, decrease, have no impact on the rate. the rate. the rate. the rate. rate =a) What is the activation energy of the reaction?c) Sketch the curves on the following plots for the reaction. Run with excess TiCl 4 Run with excess O 2 rate P Oxygen rate P TiCl4 P oxygen t P TiCl4 t E a J/mol 4 8 8 123 each
Image of page 12
CHEM230_ W16_PREP_kinetics p 5 10 265) Balance the following redox reaction in acid: NH3(aq)+ O2(g)-> NO2(g)+ H2Oa) Write out the balanced oxidationhalf reaction in acidb) Write out the balanced reductionhalf reaction in acidc) Write out the overall balanced reaction in acid: (l) : : 5 5 5 d) Given the theoretical data in the table below, determine the rate law for the reaction. Include aboth the units and a numerical value for k. Trial Initial [NH 3 ] (M) Initial [O 2 ] (M) Rate (M/s) 1 2 3 0.03 0.015 1.04 0.09 0.015 3.12 0.03 0.030 4.16 rate = (include value and units for k)
Image of page 13
CHEM230_ W16_PREP_kinetics p 6
Image of page 14
Image of page 15

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture