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
Anuta_ua [19.1K]
3 years ago
9

How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is 0.0100 M acetic acid and 0.100 M sodium acetate to reduce the p

H to 5.05 ?
Chemistry
1 answer:
sladkih [1.3K]3 years ago
8 0
Initial moles of CH₃COOH = 1.00 x 0.0100 = 0.0100 mol

Initial moles of CH₃COONa = 1.00 x 0.100 = 0.100 mol


Let a be the volume of HNO₃ that must be added

Moles of HNO₃ added = a/1000 x 10.0 = 0.01a mol

CH₃COONa + HNO₃ => CH₃COOH + NaNO₃


Moles of CH₃COOH = 0.0100 + 0.01a

Moles of CH₃COONa = 0.100 - 0.01a


pH = pKa + log([CH₃COONa]/[CH₃COOH])

= pKa + log(moles of CH₃COONa/moles of CH₃COOH)


5.05 = 4.75 + log((0.100 - 0.01a)/(0.0100 + 0.01a))

log((0.100 - 0.01a)/(0.0100 + 0.01a)) = 0.3

(0.100 - 0.01a)/(0.0100 + 0.01a) = 10^0.3 = 2.0

0.03 a = 0.08

a = 2.67


<span>Volume of HNO3 = a = </span>2.13 mL
You might be interested in
Which beaker are the molecules are moving faster, and which beaker is it hotter?
MaRussiya [10]

Answer:

1.A

2.B

Explanation:

5 0
2 years ago
So why di fishes not have legs\
marin [14]

Answer:

Fish need to be aerodynamic to move quickly. If they had legs they woulf be less aerodynamic and unable to get away from predators.

5 0
2 years ago
What best describes why hair gel is considered a noncrystalline solid?
ad-work [718]

Given what we know, we can confirm that hair gel is considered a noncrystalline solid due to Atoms in the hair gel having no particular order or pattern.

<h3>What is a noncrystalline solid?</h3>
  • This is a solid whose atoms are amorphous.
  • What this means is that the atoms lack a specific order like most solids.
  • The most common example of this is glass.

Therefore, given the definition of a noncrystalline solid as a solid whose atoms lack a specified order, we can confirm that the second option which states that "Atoms in the hair gel having no particular order or pattern" is correct.

To learn more about Atoms visit:

brainly.com/question/13981855?referrer=searchResults

3 0
3 years ago
What do a mole of magnesium and a mole of iron have in common
lukranit [14]
What they have in common is that they both have the same number of atoms. Hope this helps. :)
7 0
3 years ago
Help lols plsssksksksksskd
artcher [175]

Answer:

I'd say "a" because not everything with plants and animals is perfectly organized together nothing ever is.

3 0
3 years ago
Other questions:
  • Which pair of elements is both malleable and able to conduct heat?
    7·1 answer
  • a solution of hydrochloric acid of unknown concentration was titrated with .21 M NaOH. if a 75 ml sample of the HCl solution req
    5·1 answer
  • Help me please!!!!!!!!!!
    8·2 answers
  • Protons are located in the nucleus of the atom. A proton has
    15·2 answers
  • Einstein‘s equation implies that a large amount of mass can be converted into a small amount of energy. True or false
    6·1 answer
  • Are there particlez of matter that are smaller than atoms??? What are theses particles calling?????
    15·1 answer
  • Hi hello I need help ASAP <br>Determine the slope of this line <br>a.2.5<br>b.0.75<br>c.1<br>d.0.4​
    8·1 answer
  • Which probing question lies within the scope of physics?
    13·1 answer
  • Which group of the periodic table is composed of inert gases
    14·1 answer
  • How many atoms of Nitrogen in 4.3 moles?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!