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
Nata [24]
3 years ago
8

A 1.00 L buffer solution is 0.112 M in acetic acid and 0.112 M in sodium acetate. Acetic acid has a pKa of 4.74. What is the pH

change of this solution upon addition of 0.1 mol of HCl?
Chemistry
1 answer:
topjm [15]3 years ago
6 0

Answer:

ΔpH = 1.25

Explanation:

Using Henderson-Hasselbalch formula:

pH = pka + log [CH₃COONa] / [CH₃COOH]

pH = 4.74 + log [0.112] / [0.112]

<em>pH = 4.74</em>

The reaction of sodium acetate (CH₃COONa) with HCl is:

CH₃COONa + HCl → CH₃COOH + NaCl

<em>Producing acetic acid, </em>CH₃COOH.

If 0.1mol of HCl reacts the final moles of CH₃COONa are:

0.112mol - 0,1 mol = 0.012mol

Moles of acetic acid are:

0.112mol + 0,1 mol = 0.212mol

Using Henderson-Hasselbalch formula:

pH = pka + log [CH₃COONa] / [CH₃COOH]

pH = 4.74 + log [0.012] / [0.212]

<em>pH = 3.49</em>

<em></em>

Change in pH, ΔpH = 4.74 - 3.49 =<em> 1.25</em>

I hope it helps!

You might be interested in
james needs 4.20 moles of nabr for an experiment. how many grams of nabr must he measure out to have 4.20 moles?
kondor19780726 [428]
75.7 grams.
Convert moles to grams using this:

Moles • grams/1 mole = grams

(Grams is over 1 mole)
6 0
3 years ago
Read 2 more answers
What is the maximum number of orbitalks for each set of quantum numbers? If it is not possible to determine the maximum number o
kolbaska11 [484]

Answer:

See Below for answer!

Explanation:

In order to find the number of orbitals given the principal quantum number, n, we can use 2n^{2}. For example n=2 would have 8 orbitals.

A) 32

B) 98

C) 50

D) 18

8 0
2 years ago
What is the mass of the steel block?
Rzqust [24]

Answer:

190.2 grams

Explanation:

each arrow points to the amount it weighs, just add it all up

7 0
2 years ago
Read 2 more answers
How many moles of NH4NO3(s) must be dissolved in water so that 73.0 kJ of heat is absorbed from the water? (The molar heat of so
SCORPION-xisa [38]
1 mole of NH4NO3 requires absorption of 25.7 kJ/mol.
Therefore; 1 kJ of heat energy is absorbed by dissolving 1/25.7 moles of NH4NO3. 
Hence; For an energy of 73.0 kJ to be absorbed the moles of NH4NO3 that dissolves will be;
 = (1/25.7 × 73)
 = 2.84 moles
Hence; 73 kJ is absorbed by dissolving 2.84 moles of NH4NO3.

7 0
3 years ago
Read 2 more answers
Briefly describe the following food chain. In your description, explain what would happen if any one of the organisms were to be
poizon [28]
The plants are the primary source of food in a food chain or a food web. The animals which feed on plants will be termed as herbivores or primary consumers like the grasshopper. The organisms feeding on primary consumers will be the secondary consumers like mice. The snake is considered to be a tertiary consumer.

If any one of the organisms were to be removed let’s say the plant, all the other consumers would most likely die since their food supply is no longer available for them to eat. The population of other consumers could fall but could also stay somewhat the same if they eat any other food.


3 0
3 years ago
Other questions:
  • Whats does the elements Li (lithium),B (boron, and Ne neon) have in common?
    10·1 answer
  • What is the molar mass of a substance?
    7·2 answers
  • At what speed do gamma Rays travel?
    14·1 answer
  • An atom can be compared to our solar system because: WILL MAKE BRAINLIEST!
    9·1 answer
  • Convert 150 kPa to atmospheres. *
    14·1 answer
  • How would you prepare 500 ml of the following solutions : Sodium succinate buffer (0.1 mol/dm3 pH 5.64)
    11·1 answer
  • What is the approximate wavelength of radio waves
    15·1 answer
  • 21. For each of the following precipitation reactions,
    10·1 answer
  • H:C::C:H<br> is the following molecule polar or nonpolar
    15·1 answer
  • 4. What is the volume of a box that has a length of 50cm, a width of 20cm,<br> and a height of 5 cm?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!