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
seraphim [82]
3 years ago
7

Which statements regarding the Henderson-Hasselbalch equation are true? If the pH of the solution is known as is the pKa for the

acid, the ratio of conjugate base to acid can be determined. At pH = pK a for an acid, [conjugate base] = [acid] in solution. At pH >> pK a for an acid, the acid will be mostly ionized. At pH << pK a for an acid, the acid will be mostly ionized. View Available Hint(s) Which statements regarding the Henderson-Hasselbalch equation are true? If the pH of the solution is known as is the pKa for the acid, the ratio of conjugate base to acid can be determined. At pH = pK a for an acid, [conjugate base] = [acid] in solution. At pH >> pK a for an acid, the acid will be mostly ionized. At pH << pK a for an acid, the acid will be mostly ionized. All of the listed statements are true. 1, 2, and 3 are true. 2, 3, and 4 are true. 1, 2, and 4 are true.
Chemistry
1 answer:
Sonbull [250]3 years ago
6 0

Answer:

1, 2, and 3 are true.

Explanation:

The Henderson-Hasselbalch equation is:

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

  • If the pH of the solution is known as is the pKa for the acid, the ratio of conjugate base to acid can be determined. <em>TRUE</em>

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

If you know pH and pka:

10^(pH-pka) = \frac{[A^-]}{[HA]}

The ratio will be: 10^(pH-pka)

  • At pH = pKa for an acid, [conjugate base] = [acid] in solution. <em>TRUE</em>

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

0 = log₁₀ \frac{[A^-]}{[HA]}

10^0 = \frac{[A^-]}{[HA]}

1 = \frac{[A^-]}{[HA]}

As ratio is 1,  [conjugate base] = [acid] in solution.

  • At pH >> pKa for an acid, the acid will be mostly ionized. <em>TRUE</em>

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

If pH >> pKa,  10^(pH-pka) will be >> 1, that means that you have more [A⁻] than [HA]

  • At pH << pKa for an acid, the acid will be mostly ionized. <em>FALSE</em>

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

If pH << pKa,  10^(pH-pka) will be << 1, that means that you have more [HA] than [A⁻]

I hope it helps!

You might be interested in
Is frictional force desirable?​
gavmur [86]

Answer: Friction is a force that resists relative motion between two surfaces in contact. Depending on the application, friction may be desirable or undesirable.

6 0
3 years ago
If you are told that one of them is Cr2O3 and the other is OsO4, which one do you expect to be the yellow solid?
Katen [24]
From own experience, I know that OsO4 is colorless, but Cr2O3 is actually a solid green from what I have seen. but I guess it could appear yellow-greenish.
7 0
3 years ago
Read 2 more answers
A mole is the amount of a substance that contains as many particles as the number of atoms in 12 grams of what isotope?
ioda
The <span>12C</span><span> isotope.  Hope this helps.</span>
3 0
3 years ago
PLEASE HELP!!!
yuradex [85]

This might be right. Im not quite sure. This is what my 5th grade science teacher told me. 'Look at the 2 LR's and add them together. Then look at the total amount which is 32. When you add the 2 LR's you get 17. So subtract 17 from 32 and you get 15. So: C:15 is your answer." (LR's stands for liquid reactants)

10+17=17

Total amount is 32

32-17=15

15 is you mass

Hope this Helps

7 0
2 years ago
Read 2 more answers
what is the difference between the number of electrons in an atom of selenium, Se and the number of electrons in an atom of alum
ELEN [110]

Answer:

Well, electrons can be converted into a atomic number so if SE atomic number is 34 that means it has 34 electrons. AI has a atomic number of 13 meaning it has 13 electrons. So the difference is that SE has more electrons then AI.

5 0
3 years ago
Other questions:
  • Which has more moles of carbon atoms, 169.2g of vitamin B6 or 176.1g of vitamin C?
    5·1 answer
  • Select the correct answer.
    15·1 answer
  • One international nautical mile is defined as exactly 6076.1155ft ,and a speed of 1 knot is defined as one international nautica
    8·1 answer
  • The elements in group 17 of the periodic table are all called halogens. All halogens have the same
    8·2 answers
  • Pls help me with this atomic number worksheet I will make you the brainiest worth 25 points
    7·1 answer
  • Calculate the volume of a 0.5M solution containing 20g of NaOH
    10·2 answers
  • The pH of a solution can be calculated from which of the following expressions?
    9·1 answer
  • If the volume of water in a cylinder is 8.0mL, but changes to 10.0mL when a solid is carefully lowered into it, the volume of th
    15·1 answer
  • GUYS I REALLY NEED THIS ASAP!!!!!​
    13·1 answer
  • Help me with this question please.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!