Question

For a reaction of A ->B + C it takes 100 seconds for the concentration of A to decrease from 0.100 M to 0.050 M and then another 200 seconds to decrease to 0.025 M. What is the value of the rate constant?

Answer #1

a.) The rate constant for the reaction is 0.460
M–1·s–1 at 200 °C. A--> products. If the
initial concentration of A is 0.00680 M. what is the concentration
after 315 s?
b.)The rate constant for this zero-order reaction
is 0.0190 M·s–1 at 300 °C. A--> products. How
long (in seconds) would it take for the concentration of A to
decrease from 0.800 M to 0.240 M?
c.)The rate constant for this second-order
reaction is 0.520 M–1·s–1 at 300 °C. A-->...

a.) The rate constant for the reaction is 0.460
M–1·s–1 at 200 °C. A--> products. If the
initial concentration of A is 0.00680 M. what is the concentration
after 315 s?
b.)The rate constant for this zero-order reaction
is 0.0190 M·s–1 at 300 °C. A--> products. How
long (in seconds) would it take for the concentration of A to
decrease from 0.800 M to 0.240 M?
c.)The rate constant for this second-order
reaction is 0.520 M–1·s–1 at 300 °C. A-->...

A) 2A → B + C
The above reaction is run and found to follow first order
kinetics with a rate constant of 1.30 x 10-3
sec-1. If the initial concentration of A is 1.72 M, what
is the concentration after 152 seconds?
B) 2A → B + C
The above reaction is run and found to follow second order
kinetics with a rate constant of 1.30 x 10-3
M-1sec-1. If the initial concentration of A
is 1.66 M, what...

If the concentration of a reactant is 0.0560 M 25.5 seconds
after a reaction starts and is 0.0156 M 60.5 seconds after the
start of the reaction , how many seconds after the start of the
reaction does it take for the reactant concentration to decrease to
0.00450 M? Assume the reaction is first
order in this reactant.

2A → B + C
The above reaction is run and found to follow first order
kinetics with a rate constant of 1.30 x 10-3
sec-1. If the initial concentration of A is 1.56 M, what
is the concentration after 133 seconds?
2A → B + C
The above reaction is run and found to follow zero order
kinetics with a rate constant of 1.30 x 10-3
M•sec-1. If the initial concentration of A is 1.51 M,
what is the...

For a particular first-order reaction, it takes 48 minutes for
the concentration of the reactant to decrease to 25% of its initial
value. What is the value for rate constant (in s-1) for
the reaction?
Select one:
A. 4.8 × 10-4 s-1
B. 6.0 × 10-3 s-1
C. 1.0 × 10-4 s-1
D. 2.9 × 10-2 s-1
For the first-order reaction, 2 N2O(g) → 2
N2(g) + O2(g), what is the
concentration of N2O after 3 half-lives if 0.15 mol...

1.) 2A → B + C
The above reaction is run and found to follow second order
kinetics with a rate constant of 1.30 x 10-3
M-1sec-1. If the initial concentration of A
is 1.33 M, what is the concentration after 164 seconds?
2.) 2A → B + C
Two trials of the above reaction are run with the same initial
concentration of A. The first trial is performed at 25oC
and the second at 35oC. If the rate constant...

a) The reaction A(aq) → B(aq) is a first order reaction with
respect to A(aq). The concentration of A(aq) is reduced from 0.892
M to 0.505 M in 3.05 minutes. What is the half-life, in seconds, of
this reaction?
b) The reaction A(aq) → 2 B(aq) is a second order reaction with
respect to A(aq). Its activation energy is 49.5 kJ/mol. When the
concentration of A(aq) is 0.100 M and the temperature is
25.0oC, the rate of reaction is 0.333...

2A → B + C
The above reaction is run and found to follow second order
kinetics with a rate constant of 1.30 x 10-3
M-1sec-1. If the initial concentration of A
is 1.45 M, what is the concentration after 142 seconds?

3. A certain reaction has the following general form: 2A > B
Concentration vs time data were collected for this reaction, at
50°C and an initial concentration of 0.0200 M. It is determined
that a plot of ln[A] vs. time resulted in a straight line with a
slope value of - 2.97 X 10-2 min-1.
A. Write the rate law.
B. Write the integrated rate law
C. What is k for this reaction (or what is the rate constant for...

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