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
vladimir1956 [14]
3 years ago
12

Which of the following would have the largest pKa?

Chemistry
1 answer:
garri49 [273]3 years ago
5 0

Answer:

CH3CH2NH3+/CH3CH2NH2 would have the largest pKa

Explanation:

To answer this question we must know Kb of CH3CH2NH2 is 5.6x10⁻⁴, and for C6H5NH2 is 4.0x10⁻¹⁰. And the CH3CH2NH3+ and C6H5NH3+ are related with these substances because are their conjugate base. That means:

pKa of  CH3CH2NH3+ =  CH3CH2NH2;  C6H5NH3+ =  C6H5NH2

Also, Kw / Kb = Ka

Thus:

pKa of CH3CH2NH3+/CH3CH2NH2 is:

Kw / kb = Ka = 1.79x10⁻¹¹

-log Ka = pKa

pKa = 10.75

pKa of C6H5NH3+/ C6H5NH2 is:

Kw / kb = Ka = 2.5x10⁻⁵

-log Ka = pKa

pKa = 4.6

That means CH3CH2NH3+/CH3CH2NH2 would have the largest pKa

You might be interested in
_____states that the physical and chemical properties of the elements are periodic within the sequence of their atomic numbers.
Novay_Z [31]
The answer is Periodic
4 0
3 years ago
Read 2 more answers
Which of the following is an elastic force
AleksandrR [38]

Answer:

C is the correct answer

Explanation:

8 0
3 years ago
1) What is the electron configuration of the element with 27 protons?
Romashka [77]
1) cobalt u can tell bc on a periodic table there is a small number that on cobalt is 27.

2) think that would be 11 bc in the 4th shell there can  be up to 18 electrons
6 0
3 years ago
Help for brainliest
Margarita [4]

Answer:

those things that looks like cristals

8 0
3 years ago
Mechanical twinning occurs in metals having which type(s) of crystal structure(s)?
kari74 [83]
Mechanical twinning occurs in metals having body center cubic and hexagonal closed packed structures. Twinning is said to occur when a portion of a crystal takes up an orientation that is related to the orientation of the untwinned lattice in a definite symmetrical manner. 
5 0
3 years ago
Other questions:
  • The molecular structure of water contains two atoms of hydrogen and one atom of oxygen. When water reaches its boiling point and
    11·1 answer
  • what is weather? What are some terms we use to describe weather? What affects the weather in a particular place over time?
    13·2 answers
  • Which substance is a gas at room temperature and atmospheric pressure?
    14·1 answer
  • Calculate the change in internal energy of the following system: a 100.0-g bar of gold is heated from 25 ∘C to 50 ∘C during whic
    12·2 answers
  • What is an isotope ? how is the mass calculated ?
    15·1 answer
  • Compound has a molar mass of and the following composition: element mass % carbon 58.77% hydrogen 13.81% nitrogen 27.42% Write t
    7·1 answer
  • How can we use properties to identify unknown minerals?
    9·2 answers
  • 3. A student mixes a solid powder into a beaker of fluid. Which of the following would indicate that a chemical change has defin
    12·1 answer
  • 3 moles of nitrogen and 5 moles of hydrogen react to form ammonia. Use the balanced equation below to determine which is the lim
    9·1 answer
  • Which statement is TRUE about the following reaction.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!