At a given temperature, the kinetics parameters for a new chemical reaction are

Question

At a given temperature, the kinetics parameters for a new chemical reaction are determined in the following sequence from first to last For a zero- first- or second-order reaction A rightarrow P the order of reaction with respect to reactant A may be determined The reaction with rate law rate From the stoichiometry of the reaction The rate constant for the first order decomposition of SO_2Cl_2is 1.37 Times 10^-9 min^-1 at a certain temperature 1 the concentration is initially 0.500 M, predict it after 300 min. Which of the following factors increases the rate of a chemical reaction by increasing the fraction of mole, with energy in excess of a given value?

Explanation / Answer

6)

first we need to determine the rate law

then the orders of the reaction

and finally the rate constant

so

the answer is

c) orders of reaction , rate law , k

7) d) any of these choices

8) given

rate = k [NO]^2 [Cl2]

so

it is 2nd order with respect to NO and first order with respect to Cl2

overall order = 2 + 1 = 3

so

the answer is e) second , first , third

9)

given reaction is

2 I- + H202 + 2H30+ ---> I2 + 4H20

the rate law cannot be determined using stoichiometry

it should be determined experimentally

so

the answer is e) cannot be predicted

10)

for a first order reaction

ln (Ao/A) = kt

so

ln ( 0.5 / A) = 1.37 x 10-3 x 300

[A] = 0.331 M

so

the answer is b) 0.331 M

11) d) adding a catalyst

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