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
Helga [31]
3 years ago
11

A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0°C. What is the magnitude of k at 95.0°C if Ea =

55.5 kJ/mol?2.85 × 104 s-1576 s-19.56 × 103 s-14.33 × 1087 s-11.36 × 102 s-1
Chemistry
1 answer:
never [62]3 years ago
5 0

Answer:

k ≈ 9,56x10³ s⁻¹

Explanation:

It is possible to solve this question using Arrhenius formula:

ln\frac{k2}{k1} = \frac{-Ea}{R} (\frac{1}{T2} -\frac{1}{T1} )

Where:

k1: 1,35x10² s⁻¹

T1: 25,0°C + 273,15 = 298,15K

Ea = 55,5 kJ/mol

R = 8,314472x10⁻³ kJ/molK

k2 : ???

T2: 95,0°C+ 273,15K = 368,15K

Solving:

ln\frac{k2}{k1} = 4,257

\frac{k2}{k1} = 70,593

{k2} = 9,53x10^3 s^{-1}

<em>k ≈ 9,56x10³ s⁻¹</em>

I hope it helps!

You might be interested in
If 1.2 moles of ideal gas occupy a volume of 18.2 L at a pressure of 1.8 ATM what is the temperature of gas in degrees Celsius.
Novosadov [1.4K]

Answer: A 59.5 degree celcius

The equation that we will use to solve this problem is :

PV = nRT where:

P is the pressure of gas = 1.8 atm

V is the volume of gas = 18.2 liters

n is the number of moles of gas = 1.2 moles

R is the gas constant =  0.0821

T is the temperature required (calculated in kelvin)

Using these values to substitute in the equation, we find that:

(1.8)(18.2) = (1.2)(0.0821)(T)

T = 332.5 degree kelvin

The last step is to convert the degree kelvin into degree celcius:

T = 332.5 - 273 = 59.5 degree celcius

8 0
3 years ago
Why does the nitrogen concentration decrease after hydrogen is added? n2(g)+3h2(g)⇌2nh3(g) why does the nitrogen concentration d
Leno4ka [110]

<span>The chemical reaction of a reversible reaction is actually governed by Le Chatelier’s principle. It states that when more reactants are introduced into the system, the reaction will proceed forward to create more products. So since Hydrogen is a reactant and Nitrogen is also reactant so adding more Hydrogen makes more products hence reducing the Nitrogen concentration.</span>

3 0
3 years ago
energy that comes from the heat of the earth's core is known as: solar energy hydro energy geothermal energy wave energy
Alecsey [184]
Energy that comes from the heat of the Earth's core is known as geothermal energy.
Solar energy comes from the Sun, hydro energy from water, and wave energy from wind and waves.
7 0
3 years ago
Read 2 more answers
If 50% of a radioactive element remains after 4000 years, what is the half-life?
ANTONII [103]

Hey there!

A half-life means after a certain amount of time, half of that substance will be gone/changed after that time.

If 50%, or half, of the element remains after 4000 years, that means the half life must be 4000 years.

Hope this helps!

4 0
3 years ago
I NEED HELP ASAP! WILL MARK AS BRAINLIEST
LiRa [457]

Answer:

Sry i am unable to see the attached picture but i hope this helps

Explanation:

There are a couple of ways to prepare a buffer solution of a specific pH. In the first method, prepare a solution with an acid and its conjugate base by dissolving the acid form of the buffer in about 60% of the volume of water required to obtain the final solution volume

5 0
3 years ago
Read 2 more answers
Other questions:
  • For multiple covalent bonds to form in molecules the molecules must contain carbon nitrogen or​
    15·1 answer
  • An animal which eats plants and animals is a(n)
    13·1 answer
  • Particle quantity/number of Cu(NO3)2
    7·1 answer
  • How many moles of water are produced when 3.25 moles of co2 are formed during the combustion of methyl alcohol (ch3oh)? 2ch3oh 3
    5·2 answers
  • Which of the following compounds are ionic compounds? Check all of the boxes that apply.
    13·2 answers
  • Which Carbon is the triple bound attached to in 6-ethyl-2-octyne?
    7·1 answer
  • A buffer is a solution that: Select one: a. Results from mixing a strong acid and a strong base. b. When added to another soluti
    12·1 answer
  • Fill in the blank: The bonds in an ionic compound________<br> electrons.
    9·2 answers
  • . One mole of N2O4 contains ___________.
    11·1 answer
  • Would you recommend your friend build a digester for their farm? Why or why not?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!