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
poizon [28]
3 years ago
10

You are performing a titration of a triprotic acid, when you spill water on your lab notebook. you can read that: pka 1 = 1.40,

pka 3 = 9.80. you have determined experimentally that the ph at the first equivalence point is 3.35, and the ph at the second equivalence point is 7.55. what is pka 2 for this acid?
Chemistry
1 answer:
eimsori [14]3 years ago
5 0
According to the PH formula:
PH= Pka +㏒ [strong base/weak acid]
when we have PH at the first equivalence =3.35 and the Pka1 = 1.4
So, by substitution, we can get the value of ㏒[strong base / weak acid]
3.35 = 1.4 + ㏒[strong base/ weak acid]
∴㏒[strong base/weak acid] = 3.35-1.4 = 1.95 
to get the Pka2 we will substitute with the value of ㏒[strong base/ weak acid] and the value of PH of the second equivalence point
∴Pk2 = PH2 - ㏒[strong base/ weak acid]
          = 7.55 - 1.95 = 5.6 
You might be interested in
Thirst is triggered when total body water decreases by as little as
tiny-mole [99]
The Answer to the question is:

:1%
5 0
3 years ago
What is the gram formula mass of Na2CO3 multiplied by 10H2O
Lerok [7]
Enter a chemical formula to calculate its molar mass and elemental composition: Notice: your ... as a zero '0' Molar mass of Na2Co3*10H2O<span> is 402.9319 g/mol ...</span>
6 0
3 years ago
The cell theory has three main components. Which three scientists’ conclusions formed these components?
Genrish500 [490]

Answer:

Matthias Schleiden, Theodor Schwann, and Rudolf Virchow.

Explanation:

7 0
3 years ago
what happens to the yield of hydrogen if the reaction is carried out at a higher temperature but at the same pressure​
valkas [14]

Answer: It increases the rate of desulfurization at a constant feed rate

Explanation:

5 0
3 years ago
Why are halogens unreactive?
Nesterboy [21]
I think it is D, halogens have a full outer shell of valence electrons :)) hope I helped
6 0
2 years ago
Read 2 more answers
Other questions:
  • Name an element or elements in the periodic table that you would expect to be chemically similar to potassium.
    14·1 answer
  • A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin
    11·1 answer
  • How many moles of oxygen molecules are present in 112ml of co2 at NTP?​
    10·1 answer
  • Which statement describes a chemical property of iodine?
    11·1 answer
  • SOME ONE HELP ME ON THIS WEBSITE
    8·1 answer
  • What is the ph of a solution of 0.700 m kh2po4, potassium dihydrogen phosphate?
    13·1 answer
  • 95. Using the standard enthalpy of formation data in Appendix G, calculate the bond energy of the carbon-sulfur double bond in C
    6·1 answer
  • ___ are in group 18
    11·1 answer
  • Can somebody plz answer this question only in 1-2 sentences! That would be great thanks so much :)
    13·1 answer
  • Some one have a full conversation with me I am so bored
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!