1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
galina1969 [7]
3 years ago
9

The frequency factors for these two reactions are very close to each other in value. Assuming that they are the same, compute th

e ratio of the reaction rate constants for these two reactions at 25 ∘C. k1k2 =
Chemistry
1 answer:
MrRissso [65]3 years ago
7 0

The question is incomplete, complete question is :

The frequency factors for these two reactions are very close to each other in value. Assuming that they are the same, compute the ratio of the reaction rate constants for these two reactions at 25°C.

\frac{K_1}{K_2}=?

Activation energy of the reaction 1 ,Ea_1 = 14.0 kJ/mol

Activation energy of the reaction 2,Ea_1  = 11.9 kJ/mol

Answer:

0.4284 is the ratio of the rate constants.

Explanation:

According to the Arrhenius equation,

K=A\times e^{\frac{-Ea}{RT}}

The expression used with catalyst and without catalyst is,

\frac{K_2}{K_1}=\frac{A\times e^{\frac{-Ea_2}{RT}}}{A\times e^{\frac{-Ea_1}{RT}}}

\frac{K_2}{K_1}=e^{\frac{Ea_1-Ea_2}{RT}}

where,

K_2 = rate constant reaction -1

K_1 = rate constant reaction -2

Activation energy of the reaction 1 ,Ea_1 = 14.0 kJ/mol = 14,000 J

Activation energy of the reaction 2,Ea_1  = 11.9 kJ/mol = 11,900 J

R = gas constant = 8.314 J/ mol K

T = temperature = 25^oC=273+25=298 K

Now put all the given values in this formula, we get

\frac{K_1}{K_2}=e^{\frac{11,900- 14,000Jl}{8.314 J/mol K\times 298 K}}=2.3340

0.4284 is the ratio of the rate constants.

You might be interested in
Calculate the wavelength of radiation with a frequency of 8.0 x 10^14 Hz.
Soloha48 [4]

Answer:

Wavelength of radiation is 0.375×10⁻⁶ m

Explanation:

Given data:

Frequency of radiation = 8.0×10¹⁴ Hz

Wavelength of radiation = ?

Solution:

Frequency and wavelength of lights are inversely proportional to each other.

The wave of light having highest frequency have shortest wavelength and the light with the shortest frequency having highest wavelength.

Formula:

Speed of light = wavelength × frequency

c = λ × f

λ = c/f

This formula shows that both are inversely related to each other.

The speed of light is 3×10⁸ m/s

Frequency is taken in Hz.

It is the number of oscillations, wave of light make in one second.

Wavelength is designated as "λ" and it is the measured in meter. It is the distance between the two crust of two trough.

Now we will put the values in formula.

λ = 3×10⁸ m/s  / 8.0×10¹⁴ Hz

λ = 0.375×10⁻⁶ m

8 0
2 years ago
Why can't liquids change volume but gasses can?
kupik [55]
Because liquids cant be condensed the way that gasses can for example in a tank of argon you can put 20 cubic feet because it can be be condensed but you could not fit 20 cubic feet of water because it can not be packed together . 
4 0
3 years ago
Read 2 more answers
Which of the following is used in pencils?
Mamont248 [21]

Answer:

1st answer:  A. Graphite

2nd answer:  B.  Mercury

Explanation:

3 0
3 years ago
Read 2 more answers
What do organisms have based on their functions?
mote1985 [20]
Unicellular organisms, cells perform all the basic actions and functions required for living like nutrition, respiration, reproduction etc.

In multicellular organisms, cells divide their tasks on the basis of "DIVISION OF LABOUR" to specialize in certain functions besides respiration etc. Like conduction in neurons, excitation in muscles, RBC production by bone marrow etc.
6 0
2 years ago
I need help assapppp
DedPeter [7]

Answer:

Lithium has 3 protons, 4 neutrons, 3 electrons, and its mass is 6.941 u

4 0
3 years ago
Other questions:
  • What is the definition of tributary
    5·1 answer
  • A chemist has 2.0 mol of methanol (CH3OH). The molar mass of methanol is 32.0 g/mol. What is the mass, in grams, of the sample?
    7·2 answers
  • HURRY PLS HELP PLEASE: A 40.0-L sample of fluorine is heated from 363 Kelvin to 459 K. What volume will the sample occupy at the
    5·1 answer
  • When gasses are heated the average velocity (speed) of the gas particles decreases.
    5·1 answer
  • Ms. Crawford gave the following instructions to her science class:
    10·2 answers
  • One of the ingredients used to make bread is yeast, a type of microorganism. This may seem odd, to use a microorganism as an ing
    11·2 answers
  • How can the periodic table be used to infer the number of valence electrons in an atom?
    10·1 answer
  • What is this?<br> "This car is speeding up"
    11·2 answers
  • Which of the following is a CHEMICAL CHANGE?
    14·1 answer
  • OXIDATION ELECTRON TRANSFER
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!