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
siniylev [52]
3 years ago
7

Devon’s laboratory is out of material to make phosphate buffer. He is considering using sulfate to make a buffer instead. The pk

a values for the two hydrogens in H2SO4 are -10 and 2.
Will this approach work for making a buffer effective near a pH of 7?
O yes
O not enough information to answer
O no
What is the optimal pH for sulfate‑based buffers? Enter your answer as a whole number.
Chemistry
1 answer:
sesenic [268]3 years ago
4 0

Answer:

Is not possible to make a buffer near of 7.

Optimal pH for sulfate‑based buffers is 2.

Explanation:

The dissociations of H₂SO₄ are:

H₂SO₄ ⇄ H⁺ + HSO₄⁻ pka₁ = -10

HSO₄⁻ ⇄ H⁺ + SO₄²⁻ pka₂ = 2.

The buffering capacity is pka±1. That means that for H₂SO₄ the buffering capacity is in pH's between <em>-11 and -9 and between 1 and 3</em>, having in mind that pH's<0 are not useful. For that reason, <em>is not possible to make a buffer near of 7.</em>

The optimal pH for sulfate‑based buffers is when pka=pH, that means that optimal pH is <em>2.</em>

<em />

I hope it helps!

You might be interested in
33 protons 36 electrons 45 neutrons
Artist 52 [7]

As has an atomic number of 33, so it has 33 protons.  

It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.  

It has a mass of 75, which is the sum of neutrons and protons.  

33+n=75 ---> n = 75 - 33 = 42 neutrons  

The answer is e) 33 protons, 42 neutrons and 36 electrons.

6 0
4 years ago
Is the planet Uranus surface rocky or flat?
klemol [59]

Uranus is said to be made of fluids. Its atmosphere is its surface
6 0
4 years ago
If the percent by volume is 2.0% and the volume of solution is 250 mL, what is the volume of solute in solution? Show your work.
Mrrafil [7]
Volume of solute = 250 * 2%
= 250 * 0.02
= 5

In short, Your Answer would be 5 mL

Hope this helps!
3 0
3 years ago
What types of properties change during a chemical reaction?
ryzh [129]
The chemical composition 

4 0
3 years ago
Read 2 more answers
8.7g+15.43g+19g?<br> 853.2L-627.443L?<br> 5.47m+11m+87.300m?
gizmo_the_mogwai [7]

the god ran down the street

6 0
3 years ago
Other questions:
  • Why would dry cleaners use nonpolar tetrachloroethylene, C2Cl4, to get cheeseburger grease out of your clothes?
    13·2 answers
  • Write the complete ionic equation and the Net ionic equation for: K2C2O4(aq)+Pb(OH)2(aq) -&gt; 2KOH(aq)+PbC2O4(s)
    12·1 answer
  • Using the round 2 fasttrack bond table (page 2), how is digby's "yield" calculated for their 10.0s2020 bond?
    7·1 answer
  • What is the IUPAC name of the following compound? There is a structure for an organic molecule. It has 6 carbons in its chain, a
    10·1 answer
  • A prehistoric pharmacist might have been called a
    9·1 answer
  • 59.23
    7·2 answers
  • Sodium metal reacts with chlorine gas in a combination reaction. Write a balanced equation to describe this reaction. Click in t
    5·1 answer
  • The chemical formula for water is h2o. According to this formula what is the composition of a water molecule
    14·1 answer
  • What does group 16 (oxygen family) have in common
    7·2 answers
  • Which of the following are pure substances? (Select all that apply.)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!