rate of reaction

posted by j

What is the initial rate of *appearance* of SO3(g)?

a reaction and table are given:

reaction: 2S02(g)+O2 -------> 2 SO3(g)

Table note: i= initial, IRD= initial rate of disappearance; concentrations given in molarity (M) IRD given in M/s.

Experiment [SO2]i [O2]i IRD O2
1 0.05 0.05 7.3*[10^(-2)]
2 0.10 0.05 2.9*[10^(-2)]
3 0.10 0.15 2.6*[10^(-1)]
4 0.12 0.12 ?????????????


so overall oreder is 4 or specifically:
rate=k([SO2]^2)([O2]^2) with k= 1168 so
rate=1168([SO2]^2)([O2]^2)

not sure what to do here I believe that rate relationship is:

-(delta [O2)]/delta time)=
1/2(delta [SO3]/delta time)

and I think I need to use trials 2&3 because that is where [SO2] is held constant.

Answer is given as 4.84*10^(-1) trying to figure out how to get there.

Thank you

  1. DrBob222

    Are you sure of these data? I can confirm that the reaction is second order with respect to O2 but I can't confirm it is second order with respect to SO2

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Chemistry

    For the reaction: 5A + 3B -> 6C + D, the following data is found: Time________A 0.00s .775 M 5.00s .200 M Find the rate of disappearance of A, the overall rate of reaction, and the reates of disapperance and appearance of B, C, …
  2. Chemistry

    The reaction X + Y --> products was studied using the method of initial rates. The initial rate of consumption of X was measured in three different experiments. What is the value of the rate constant, k?
  3. chemistry

    The formation of nitroanalyine (an important intermediate in dyes, called ‘fast orange’) is formed from the reaction of ortho-nitrochlorobenzene (ONCB) and aqueous ammonia. (See Table 3-1 and Example 9-2.) The liquid-phase reaction …
  4. Chemistry

    Chemistry HELP - Rates of reaction, redox reactions?
  5. Chemistry

    The reaction between NO (nitric oxide) and oxygen is a key step in the formation of acid rain. O2(g) + 2NO(g) → 2NO2(g) A series of experiments were run, each of which starts with a different set of reactant concentrations. From …
  6. Chemistry

    Rates of reaction, redox reactions? 10 points?
  7. Chemistry

    Because of the changing color of the solution as the following reaction proceeds, the rate law can be determined by measuring the rate of disappearance of the permanganate ion (MnO4-). 2MnO4-(aq)+ 5H2C2O4(aq) + 6H+(aq) -> 2Mn2+(aq) …
  8. Chemistry

    For the following reaction 2NO2 -> 2NO +O2 is second order reaction. If the initial concentration of NO2 is 0.098M and the initial rate of disappearance is 2.72e-3 M/sec , what is the value of the rate constant?
  9. Chemistry

    Experiment 1: A has .20 M, B has .20 M and the initial rate is 2.0*10^-4M/min Experiment 2: A has .20 M, B has .40 M, and the initial rate is 8.0*10^-4M/min Experiment 3: A has .40 M, B has .40 M, and the initial rate is 1.6*10^-3M/min …
  10. Chemistry

    The reaction of nitrogen dioxide with fluorine generates nitryl fluoride: 2NO2(g) + F2(g) --> 2NO2F(g) To determine the rate law for this reaction, a chemist performed several initial-rate experiments using different initial concentration, …

More Similar Questions