reactions

For the reaction
BrO3-   +   5 Br-   +   6 H+   --->   3 Br2   +   3 H2O
at a particular time,   -/[BrO3-]// t   =   1.5 10-2 M/s.
What is    -/[Br-]//t    at the same instant?

    
          

Question 2      
   Question:  The reaction
A + 2 B ---> products
has been found to have the rate law,
rate = k [A] [B]2.

While holding the concentration of A constant, the concentration of B is increased from x to 3x.
Predict by what factor {an integer multiple} the rate of reaction increases.

    
          


Question 3     Multiple Choice
   Question:  Nitric oxide gas (NO) reacts with chlorine gas according to the equation

          NO   +   ½ Cl2   ®    NOCl.

The following initial rates of reaction have been measured for the given reagent concentrations.

               Expt. #                 Rate (M/hr)               NO (M)           Cl2 (M)

                     1                        1.19                       0.50               0.50

                     2                        4.79                       1.00               0.50

                     3                        9.59                       1.00               1.00

Which one of the following is the rate law (rate equation) for this reaction?


    
      
          A.       rate = k [NO]



          B.       rate = k [NO] [Cl2]1/2



          C.       rate = k [NO] [Cl2]



          D.       rate = k [NO]2 [Cl2]



          E.       rate = k [NO]2 [Cl2]2