D Question 20 1 pts Suppose a reaction A+B C occurs at some initial rate at 25°C. Which response includes all of the cha

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: D Question 20 1 Pts Suppose A Reaction A B C Occurs At Some Initial Rate At 25 C Which Response Includes All Of The Cha 1 (29.43 KiB) Viewed 77 times

: D Question 20 1 Pts Suppose A Reaction A B C Occurs At Some Initial Rate At 25 C Which Response Includes All Of The Cha 2 (37.71 KiB) Viewed 77 times

: D Question 20 1 Pts Suppose A Reaction A B C Occurs At Some Initial Rate At 25 C Which Response Includes All Of The Cha 3 (29.65 KiB) Viewed 77 times

: D Question 20 1 Pts Suppose A Reaction A B C Occurs At Some Initial Rate At 25 C Which Response Includes All Of The Cha 4 (41.13 KiB) Viewed 77 times

: D Question 20 1 Pts Suppose A Reaction A B C Occurs At Some Initial Rate At 25 C Which Response Includes All Of The Cha 5 (30.45 KiB) Viewed 77 times

D Question 20 1 pts Suppose a reaction A+B C occurs at some initial rate at 25°C. Which response includes all of the changes below that could increase the rate of this reaction? 1 lowering the temperature II. adding a catalyst III. increasing the initial concentration of B O ll only O II and III I and 11 O I only O III only

O Question 21 1 pts Consider the reaction X – Y+Z Which of the following is a possible rate law? O Rate - k[Y]" none of these Rate - KYPIZ Rate - ZP Rate - XIIY1 D Question 22 1 pts The gas phase reaction A+B-C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2. The overall order of the reaction is third is first none of these is second is zero SO 3: < + 5 4 5 6 7 8 9 R T Y с C

Question 23 1 pts A general reaction written as A + 2B - C+ 2D is studied and yields the following data: [Alo [B). Initial A[C]/At 0.150 M 0.150 M 8 mol/Los 0.150 M 0.300 M 16 mol/L's 0.300 M 0.150 M 32 mol/L's What is the order of the reaction with respect to A? 3 O2 O1 none of these

Question 24 1 pts The reaction is known to be zero order in A with a rate constant of 5.0 x 10-2 mol/L's at 25°C An experiment was run at 25°C where Alo - 1.710 M. The half-life for the reaction is 3.4 10 O 1.710 O none of these 1.7 * 10-25 O 5.0 x 10 D Question 25 1 pts Which of the following statements concerning graphical methods for determining reaction order is false? For a first-order reaction the plot of In[A] vs. time gives a straight line. a none of these For a zero-order reaction the plot of [A] vs. time gives a straight line. For a first-order reaction the slope of the straight-line graph equals -ak. For a second-order reaction the plot of [Al vs time gives a straight line. a SS 5 6 7 8 9 R T Y U

Question 26 1 pts The following questions refer to the reaction 2A2 + B2 → 2C. The following mechanism has been proposed: step 1 (slow) A2+ B2 → R+C step 2 (fast) A2 + RC Which step is rate determining? step 2 O and intermediate step between 1 and 2 Onone of these O both steps O step 1