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
Ghella [55]
2 years ago
5

Calculate the ph of a solution containing 0.0451 m potassium hydrogen tartrate and 0.028 m dipotassium tartrate. The ka values f

or tartaric acid are 9.20 × 10-4 (ka1) and 4.31 × 10-5 (ka2).
Chemistry
1 answer:
Marina86 [1]2 years ago
4 0

Given buffer:

potassium hydrogen tartrate/dipotassium tartrate (KHC4H4O6/K2C4H4O6 )

[KHC4H4O6] = 0.0451 M

[K2C4H4O6] = 0.028 M

Ka1 = 9.2 *10^-4

Ka2 = 4.31*10^-5

Based on Henderson-Hasselbalch equation;

pH = pKa + log [conjugate base]/[acid]

where pka = -logKa

In this case we will use the ka corresponding to the deprotonation of the second proton i.e. ka2

pH = -log Ka2 + log [K2C4H4O6]/[KHC4H4O6]

     = -log (4.31*10^-5) + log [0.0451]/[0.028]

pH = 4.15



You might be interested in
Describe what Darwin observed during his voyage on the HMS Beagle
melisa1 [442]
I think he saw birds of striking different form and structure to those of Europe and went further to establish that it was due to evolution. 
6 0
2 years ago
Read 2 more answers
What is part of the muscular system?
Likurg_2 [28]

Answer:

skeletal, smooth, and cardiac muscles

Explanation:

Plz brainliest

8 0
2 years ago
Describe two carbon sequestering methods that could reduce the impact of deforestation
aleksandr82 [10.1K]

The two carbon-sequestering methods that could reduce the impact of deforestation are afforestation and agriculture.

Carbon sequestering

  • It is a process of capturing and storing the carbon dioxide gas of an atmosphere on a large scale.
  • This is done to prevent adverse global climatic conditions
  • The methods which can reduce the impact of deforestation are afforestation, wetlands, fertilizing ocean surfaces, agriculture, etc.

Afforestation

  • Planting trees in the nonforest region or planting trees in the deforested region.
  • By this more and more carbon dioxide gas will be absorbed by the tress from the atmosphere via photosynthesis and that will get involve in the carbon cycle.
  • Help in re-establishing an ecosystem in the region and prevent soil erosion.

Agriculture

  • Growing and planting crops which maintain carbon level of the soil, And along with absorbs carbon dioxide gas from the atmosphere.
  • Will increase the concentration of oxygen gas in the atmosphere leading to prevent air pollution.

Learn more about carbon sequestering here:

brainly.com/question/18392835?referrer=searchResults

6 0
1 year ago
A 1300 mL sample of gas with a molar mass of 71.0 g/mol at STP has what density?
Blizzard [7]

Answer:

0.055g/mL

Explanation:

Data obtained from the question include:

Molar Mass of the gass sample = 71g/mol

Volume of the gas sample = 1300 mL

Density =?

The density of a substance is simply mass per unit volume. It is represented mathematically as:

Density = Mass /volume.

With the above equation, we can easily obtain the density of sample of gas as illustrated below:

Density = 71g / 1300 mL

Density = 0.055g/mL

Therefore, the density of the gas sample is 0.055g/mL

6 0
3 years ago
Brainliest get's +20 points!
gizmo_the_mogwai [7]

Answer:

i think thats correcr!

Explanation:

6 0
3 years ago
Other questions:
  • A student measures the mass of a substance as 1.7132kg and it's volume as 0.65l. What is the density substance in g/mL? Round yo
    14·1 answer
  • Solutions of hydrochloric acid caused the light bulb to glow brighter than solutions of acetic acid. how do you account for the
    14·1 answer
  • When dissolved in water, which compound is generally considered to be Arrhenius acid
    14·1 answer
  • 4NH3 + 502--> 4NO + 6H 20
    5·1 answer
  • When an atom loses electrons it becomes _____.
    6·2 answers
  • A 13.5 g sample of an unknown gas occupies 5.10 L at 149.83 kPa and 301 K. What is the molar mass of the gas ?
    7·1 answer
  • When coal goes through combustion it releases nitrogen and sulpur into the air in the form of what
    7·1 answer
  • Which of the following does not represent the writing mechanics of an individual?
    7·1 answer
  • BRAINLIEST IF RIGHT!! Write 200.0398 in 2 sig figs.
    10·2 answers
  • Which coefficients correctly balance the formula equation below? NH 4 NO 2 (s) N 2 (g)+H 2 O(l) A. 1, 2, 2 C. B. 2, 1, 2 D. 1, 2
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!