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
vladimir2022 [97]
3 years ago
15

If the activation energy for a given compound is found to be 42.0 kJ/mol, with a frequency factor of 8.0 × 1010 s-1, what is the

rate constant for this reaction at 298 K?
Chemistry
1 answer:
Sveta_85 [38]3 years ago
8 0

Answer:3480s⁻¹

Explanation:We can solve the following problem using the Arrhenius equation.

Arrhenius equation is given by:

K=Aexp[-Ea/RT]

A=Pre-exponential factor or frequency factor

Ea=Activation energy

R=Ideal gas constant

T=Temperature

K=Rate constant

From the Arrhenius equation we can see that  the rate constant K is related with the activation energy and frequency factor.

In the question we are given with the following data:

Ea=42KJ/mol=42x 1000 J/mol

A=8.0×10¹ per second

T=298K

R=8.314J/K mol

when we substitute these given values in Arrhenius equation

K=A{exp[-Ea \div RT]}\\K=8\ \times10^{10} s^{-1}{exp[-42000\div 8.314\times298]}\\K=8\ \times10^{10} s^{-1}{exp[-16.95]}\\K=4.35\times10^{^{-8}}\times8.0\times10^{^{10}}s^{-1}\\K=34.8\times10^{2}s^{-1}\\

K=3480s⁻¹

The value of rate constant obtained is 3480s⁻¹.

You might be interested in
Li + H2O → H2 + LiOH is it Balanced or Unbalanced​
Sav [38]

Answer:

It is Unbalanced

Explanation:

2Li + 2H2O→ 2LiOH+ H2

8 0
3 years ago
When you are getting up for school in Texas, a student on the other side of earth is getting ready for bed what is the reason fo
Yanka [14]

Answer:

might be D

Explanation:

4 0
3 years ago
Read 2 more answers
A tarantula was walking along the sidewalk and walked 30 centimeters in 5 seconds. What was the average speed of the spider?
Marina CMI [18]
I’m pretty sure you would have to divide 5 and 30 and you will get 0.16666666 but I would think it would be 6cm/s but I could be wrong and if it is I’m am truly sorry.
7 0
3 years ago
What are the metric units of volume, mass and density?
prohojiy [21]
<span>he density of a material is defined as its mass per unit volume. In this example, each volume of water is different and therefore has a specific and unique mass. The mass of water is expressed in grams (g) or kilograms (kg), and the volume is measured in liters (L), cubic centimeters (cm 3), or milliliters (mL).</span>
8 0
3 years ago
What is an example of a neutral ion.
VARVARA [1.3K]
A neural sodium ion.
4 0
3 years ago
Other questions:
  • NEED HELP! FAST! WILL CHOOSE BRAINLIEST ANSWER!
    7·1 answer
  • Ill upvote help please
    5·1 answer
  • Whats factors create surface currents?
    15·1 answer
  • 'Synthetic detergents are better than soaps'. Justify this statement​
    5·2 answers
  • When 38^88Sr decays to 34^84Kr, a(n) ______________ is emitted
    15·1 answer
  • an archer releases an arrow toward a Target the arrow travels 166 m in 2 seconds what is the speed of the arrow​
    7·1 answer
  • What is the balanced NET ionic equation for the reaction when aqueous Cs₃PO₄ and aqueous AgNO₃ are mixed in solution to form sol
    5·1 answer
  • Are two atoms of the same element identical?
    9·1 answer
  • I need help on this, It’s due today. Please, anybody
    14·1 answer
  • Question 14 (4 points)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!