Homework Help: I\'m not sure if my answers are right but... Step 1: O 3( g) + NO

Question

Homework Help: I'm not sure if my answers are right but...

Step 1: O3(g) + NO(g) -> O2(g) + NO2(g)

Step 2: NO2(g) ->NO(g) + O(g)

Step 3: O(g) + O3(g) -> 2O2(g)

Part a) Write the overall reaction:

Part b) What (if any) is/are the INTERMEDIATE(s) in this reaction?

My answer: There isn't any.

Part c)What (if any) is/are the CATALYST(s) in this reaction?

My answer: There isn't any.

Part d) What is the rate law fo NO decomposition of ozone in the table below

My answer:

[O3] doubles from #1 to #2 but the rate 4x

[O3] is the same from #2 to #3 but the rate doubles. However, [NO] is x^(2) and the rate does the same.

rate law = k[O3]^(2) [NO]

Experiment # [O3] (M) [NO] (M) inital rate (M/s) 1 2 E -3 4 E-3 8.0 E-4 2 4 E-3 4 E-3 3.2 E-3 3 4 E-3 8 E-3 6.4 E-3

Explanation / Answer

                  OZONE is a form of elemental oxygen . The molecules of Ozone contains three oxygen atoms(O3) .

     OZONE can be formed when a mixture of O2 & NO2 is exposed to Bright light .

             N2(g) + O2(g) ----heat------> 2NO(g)

     NO Reacts spontaneously with O2 in air to form NO2 .

         2NO(g) + O2(g) ----------> 2NO2(g)

Nitrogen dioxide is dessociates when it is irradiated with Bright light .

        NO2(g) ---light----------------> NO(g) + O(g)

The oxygen atom produced in this reaction is extremely reactive and readly attaches to a molecule of O2 to form OZONE .

   O(g) + O2(g) --------------> O3(g)

    This reaction is exothermic .

    OZONE absorbs ULTRAVIOLET RADIATION with wavelength 290nm .

     O3(g) ------UV-light---------------> O2(g) + O(g)

   

O3 ------UV-light---------------> O2 + O

NO + O3 -------------------------> NO2 + O2

NO2 + O -------------------------> NO + O2

-----------------------------------------------------------------

2 O3   --------------------------> 3O2

PART - C .

        In this reaction , Ultra Violet Radiation is act as CATALYST .   

PART-D .

         Rate law = K[O3]2

           This reaction is second order reaction .

    K1 = 1 / t * x / a(a-x)

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