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
determine the molecular formula of the compound with an empirical formula of CH and a molar mass of 78.110g/mol
Vlada [557]

Answer:

C_{6} H_{6}

Explanation:

First, find the mass of empirical formula, CH. 12.01 g/mol is for carbon, and 1.008 g/mol is for hydrogen. 12.01+1.008=13.018 G/mol CH. Divide 78.110 G/mol by 13.018 g/mol. You get approximately 6. Multiply that by the subscript of each element. 6(CH)=

C_{6} H_{6}

8 0
3 years ago
limestone breaks down when heated to form quicklime and carbon dioxide. what type of reaction is this?
Trava [24]
No chemical because, its changeing the stuff 
7 0
3 years ago
What, according to you, are the necessary activities that a penetration tester needs to perform while conducting a penetration t
bogdanovich [222]

Answer: First of all planning is done to set the goals to how to test the target. then scanning is done. after that target is uncovered to see how the target exploits by the use of web application attacks. then analysis is done an tests of the penetration tests are compiled.

Explanation:

6 0
2 years ago
Gas particles do not have much energy of motion.<br><br> True or False?
QveST [7]
False is the answer
3 0
3 years ago
Read 2 more answers
During electrophilic aromatic substitution, a resonance-stabilized cation intermediate is formed. Groups, already present on the
DIA [1.3K]

Answer:

See explanation and image attached

Explanation:

Aromatic compounds undergo electrophilic aromatic substitution reactions in which the aromatic ring is maintained.

Substituted benzenes may be more or less reactive towards electrophilic aromatic substitution than benzene depending on the nature of the substituent present in the ring.

Substituents that activate the ring towards electrophilic substitution such as -OCH3 are ortho-para directing.

The major products of the bromination of anisole are p-bromoanisole and o-bromoanisole. The resonance structures leading to these products are shown in the image attached.

5 0
3 years ago
Other questions:
  • Which statements describe lattice energy?
    7·1 answer
  • What is the mass in grams of 9.76 x 10 12 atoms of naturally occurring sodium?
    12·1 answer
  • What is the mass of heavy water, D2O(l), produced when 7.60 g of O2(g) reacts with excess D2(g)?
    7·1 answer
  • What organelle of a prokaryotic cell contains genetic information?
    11·1 answer
  • Will mark as brainlest!
    6·2 answers
  • Propane is used as a fuel for camp stoves. It undergoes combustion to form carbon dioxide and water.
    6·1 answer
  • Thanks a lot you helped me fail my test
    11·1 answer
  • Which type of number is used to write the mole to mole ratio
    10·1 answer
  • This woman comes to the clinic with high blood pressure,
    5·1 answer
  • Is it correct what I have done <br>​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!