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
Lena [83]
2 years ago
9

A certain first-order reaction 45% complete in 65seconds, determine the rate constant and the half life for the process ​

Chemistry
1 answer:
masha68 [24]2 years ago
3 0

The rate constant : k = 9.2 x 10⁻³ s⁻¹

The half life : t1/2 = 75.3 s

<h3>Further explanation</h3>

Given

Reaction 45% complete in 65 s

Required

The rate constant and the half life

Solution

For first order ln[A]=−kt+ln[A]o

45% complete, 55% remains

A = 0.55

Ao = 1

Input the value :

ln A = -kt + ln Ao

ln 0.55 = -k.65 + ln 1

-0.598=-k.65

k = 9.2 x 10⁻³ s⁻¹

The half life :

t1/2 = (ln 2) / k

t1/2 = 0.693 : 9.2 x 10⁻³

t1/2 = 75.3 s

You might be interested in
Which statement is true about sodium hydroxide (NaOH)? It is a salt because it increases the concentration of metallic ions. It
Korolek [52]
Well you see its part sodium and sodium is another word for salt so It is a salt because it is formed by the reaction of an acid and a base
5 0
3 years ago
Read 2 more answers
Why is the brcl molecule polar? the shared electrons are closer to cl due to the greater electronegativity of chlorine. bromine
klio [65]
The shared electrons are closer to Cl due to the greater electronegativity of chlorine.
8 0
3 years ago
Read 2 more answers
If the solid copper starts off at the normal melting temperature of copper and the liquid copper is put into the mold at the cry
Agata [3.3K]
Heat of what? This is an unclear question.
3 0
2 years ago
Please help i will mark brainliest which helps bring up youre rank
Elis [28]

Answer:

push or pull

Explanation:

3 0
3 years ago
Which statement is correct regarding the reaction ?
larisa86 [58]

The true statement is that after reaching equilibrium, the rate of forming products and reactants is the same.

<h3>What is true about the given reaction?</h3>

The given reaction shows a reaction between A and B to form CD

The reaction is a reversible reaction.

A reversible reaction is a reaction which can proceed in either of two ways where the reactants can react to form the product and also the products an break down to form the reactants.

In the reaction given, as the concentration of A and b decreases, the concentration of CD increases and vice versa.

At equilibrium, the rate of formation of CD is equal to the the rate of decomposition of CD.

Therefore, the true statement is that after reaching equilibrium, the rate of forming products and reactants is the same.

In conclusion, a reaction at equilibrium has the forward and backward reactions occurring at the sane rate.

Learn more about equilibrium reaction at: brainly.com/question/18849238

#SPJ1

5 0
1 year ago
Other questions:
  • What three characteristics of matter does chemistry deal with
    13·1 answer
  • The empirical formula for a compound is c2h5 and its formula mass is 58 amu. what is its molecular formula?
    15·2 answers
  • Air is a good insulator because _____.
    8·1 answer
  • You use a 15.0 gram piece of aluminum foil to cover a pan in the oven. The specific heat for aluminum is c = 0.900 J/g o C. If t
    11·2 answers
  • Which of the following is an organic compound?
    5·2 answers
  • How many moles of potassium K will react with 3 moles of sulfur S?
    9·1 answer
  • An unknown metal with a mass of 54.0 g required 773 J of energy in order to change its temperature from 63.0 C to 100.0 C. What
    15·1 answer
  • Which type of galaxy contains mostly new stars because it has lots<br> of dust and gas
    10·1 answer
  • What is density?
    8·2 answers
  • Please someone help or tell me the answer for number 2 its a quiz grade
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!