14.71 A A reaction has a rate constant of 1.26×10−4 s−1s−1 at 27  ∘C ∘C and 0.226 s−1s−1 at 77  ∘C ∘C .

Chlorine monoxide (ClO) accumulates in the stratosphere above Antarctica each winter and plays a key role in the formation of the ozone hole above the South Pole each spring. Eventually, ClO decomposes according to the equation: 2C1O (g) → Cl2 (g) + O2 (g) The kinetics of this reaction were studied in a laboratory experiment at 298K, and the data are shown in the table below. (a) Determine the order of the reaction (b) Determine the rate law expression (c) Determine the value of the rate constant, k, at 298K. Time (ms) [CiO] (M) In [ClO] cioj (M-1) [CiO] 6.67 × 107 1.39 x 108 -8- 1.50 x 10 7.19 x 10 4.74 × 10 -18.0 6- 10 -18.8 6- 20 -19.2 2.11 x 108 6- 30 3.52 х 10° -19.5 2.84 x 108 6- 40 2.81 x 10 -19.7 3.56 x 108 6- 100 1.27 x 10 -20.5 7.87 x 108 10 200 6.60 x 10- -21.1 1.52 x 10°

The rate constant for the reaction is 0.450 M−1⋅s−1 at 200 ∘C.   A⟶products If the initial concentration of A is 0.00610 M, what will be the concentration after 405 s?

he rate constant of a chemical reaction increased from 0.100 s−1s−1 to 3.30 s−1s−1 upon raising the temperature from 25.0 ∘C∘C to 43.0 ∘C∘C . Calculate the value of (1T2−1T1)(1�2−1�1) where T1�1 is the initial temperature and T2�2 is the final temperature. Express your answer numerically. View Available Hint(s)for Part ACalculate the value of  ln(k2k1)  where  k1  and  k2  correspond to the rate constants at the initial and the final temperatures as defined in part A.Express your answer numerically.View Available Hint(s)for Part What is the activation energy of the reaction?Express your answer numerically in kilojoules per mole.View Available Hint(s)

The oxidation of ammonia produces nitrogen and water via the reaction: 4NH3(g) + 302(g) ---> 2N2(g) + 6H₂O(g). If the rate of formation of nitrogen gas is 2.0 mol/(Los), then the rate at which: water is formed is also 2.0 mol/(Los) oxygen reacts is 1.5 mol/(Los) ammonia reacts is 0.5 mol/(L •s) ammonia reacts is 4.0 mol/(Los) water is being formed is 0.67 mol/(Los)

A + B yields C + D D + 2A yields E + F F + A yields G + B What is the molecularity of the second step? Write the overall reaction equation: What molecule(s) is (are) the intermediates? What molecule(s) is (are) the catalysis?

(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. Solid catalysts increase reaction rates as their surface areas increase. Catalysts decrease reaction rates. Reaction rate constants decrease with increasing temperature. The higher the rate of a reaction the longer it takes to reach completion. O Reaction rates always increase as masses of solid reactants increase. Reaction rates decrease with increasing temperature.