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
IgorLugansk [536]
3 years ago
15

For a certain reaction A → products a plot of ln[A] vs. time produces a straight line with a slope of −3.0×10−2 s−1. Which of th

e following statements is or are true?: The reaction follows first-order kinetics. The rate constant for the reaction is 3.0×10−2 s−1. The initial concentration of [A] was 1.0 M. For a certain reaction a plot of ln[] vs. time produces a straight line with a slope of . Which of the following statements is or are true?: The reaction follows first-order kinetics. The rate constant for the reaction is . The initial concentration of [] was 1.0 . Only one of the statements is true Statements I and II are true Statements I and III are true Statements II and III are true All three statements are true
Chemistry
1 answer:
Zarrin [17]3 years ago
3 0

Answer:

Statements I and II are true.

Explanation:

Let us consider the reaction A → products.

Which of the following statements is or are true?

I. The reaction follows first-order kinetics. TRUE

The expression for a first-order reaction is:

ln[A] = ln[A]₀ - k.t    [1]

where,

[A] is the concentration of the reactant A at certain time t

[A]₀ is the initial concentration of A

k is the rate constant

t is the time

If the plot of ln[A] vs. t A is a straight line, it means that the reaction follows a first-order kinetics.

II. The rate constant for the reaction is 3.0×10⁻² s⁻¹. TRUE.

In [1], ln[A]₀ is the intercept and -k the slope of the linear equation. Thus,

-k = −3.0×10⁻² s⁻¹

k = 3.0×10⁻² s⁻¹

III. The initial concentration of [A] was 1.0 M. FALSE.

Since we do not have information about the intercept in the plot of ln[A] vs. t, we do not have enough information to calculate the initial concentration of A.

Statements I and II are true.

You might be interested in
Image please. 30 POINTS
Galina-37 [17]
Q14: Our sun
Q15: The strong magnetic reaction in our atmosphere
3 0
2 years ago
Surface tension ________________________.
Alex73 [517]
C) is higher for nonpolar substances than for polar ones

6 0
3 years ago
A certain hydrocarbon has a molecular formula of C9H16. Which of the following is not a structural possibility for this hydrocar
snow_tiger [21]

Answer: Option (d) is the correct answer.

Explanation:

It is given that molecular formula is C_{9}H_{16}. Now, we will calculate the degree of unsaturation as follows.

Degree of unsaturation = C_{n} - \frac{\text{monovalent}}{2} + \frac{\text{trivalent}}{2} + 1

                                  = 9 - \frac{16}{2} + 1

                                  = 9 - 8 + 1

                                  = 2

As the degree of unsaturation comes out to be 2. It means that this compound will contain one ring and one double bond.

Yes, this compound could be an alkyne as for alkyne D.B.E = 2.

But this compound cannot be a cycloalkane because for a cycloalkane D.B.E = 1 which is due to the ring only.

Thus, we can conclude that it is a cycloalkane is not a structural possibility for this hydrocarbon.

6 0
3 years ago
Calculate the molarity of a solution prepared by dissolving 1.495 moles of lioh in enough water to give a final volume of 750. m
zhenek [66]
Molarity can be defined as the number of moles of substance dissolved in 1 L of solution.
In the given question ,
number of LiOH moles - 1.495 mol
Dissolved volume - 750 mL
molarity is calculated for 1 L = 1000 mL
In 750 mL - 1.495 mol of LiOH is dissolved
Therefore in 1000 mL - 1.495 mol / 750 mL x 1000 = 1.99 mol

4 0
2 years ago
What is the correct formula for xenon hexafluoride? XeF XeF6 Xe6F6 Xe6F
Vinil7 [7]
Hexa- means six
"hexa-" and it is in front of the fluoride so that means we have 6 fluorines
Answer:
xenon hexafluoride → XeFl_{6}

Any questions?
3 0
3 years ago
Read 2 more answers
Other questions:
  • Help need answer to this, its due tomorrow.<br><br> __N2+__H2&gt;__NH3
    12·1 answer
  • A standard backpack is approximately 30cm x 30cm x 40cm. Suppose you find a hoard of pure gold (density = 19.3 g/cm3) while trea
    11·1 answer
  • Which type of reaction is represented by the generic equation AB + CD AD + CB? combustion decomposition single replacement doubl
    10·2 answers
  • BRAINLIESTTT ASAP!! PLEASE HELP ME :)
    7·1 answer
  • Which of the following ions would represent the ion of an element from group 2A
    15·1 answer
  • The growing of plants, burning of wood, and decomposition of living matter demonstrate how carbon can be in the _______ at the s
    10·2 answers
  • What's the answer to this and why? need a answer asap​
    5·1 answer
  • When Is Mechanical Energy Not Conserved?
    13·1 answer
  • What temperature do the atoms have for solid
    11·1 answer
  • Workout the number of atoms in 0.5 moles of iron?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!