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
ss7ja [257]
3 years ago
14

Write the equation for the acid dissociation, write the Ka expression, solve for Ht concentration, then do an ICE chart. Put the

values into the Ka expression (the one you solved for Ht and find Ht, convert to pH and input that to 2 decimal place. Or use the Henderson-Hasselbalch equation:
pH = pka, + log ( Base/Acid)
Calculate the pH of a buffer solution consisting of 0.39 M HA (Ka = 8.8 x 10^-6) and 0.2 M NaA.
Chemistry
1 answer:
serg [7]3 years ago
8 0

Answer:

The pH of the buffer is 4.77

Explanation:

Using Henderson-Hasselbalch equation we can solve the pH of the buffer:

pH = pKa + log [A⁻] / [HA]

<em>Where pH is the pH of the buffer</em>

<em>pKa is -log Ka = 5.056</em>

<em>[A⁻] = [NaA] = 0.2M</em>

<em>[HA] = 0.39M</em>

<em />

Replacing:

pH = 5.056+ log [0.2] / [0.39]

pH = 4.77

<h3>The pH of the buffer is 4.77</h3>

<em />

You might be interested in
Who made. Accurate atomic weight determination’s
lana66690 [7]

Theodore Richards;  first scienstist to recieve nobel prize in Chemistry, earning the award "in recognition of his exact determinations of atomic weights of a large number of chemical elements."

6 0
3 years ago
The boiling point of a substance is tested. After 10 tests, the result is given as 37+/−3°C. Which conclusion can be drawn from
VMariaS [17]

Answer:

Explanation:

The actual boiling point is probably between 34C and 40C.

6 0
2 years ago
Read 2 more answers
The answer to a chemistry question
Otrada [13]
<span>4 C3H5(NO3)3 = 12 CO2 + 6 N2 + 10 H2O + O<span>2
That's the answer lovely~</span></span>
5 0
3 years ago
PLEASE HELP ASAP TAKING A TEST!
pav-90 [236]

Answer:

As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.

Explanation:

6 0
3 years ago
The chemical properties of a substance can only be observed when it is changed into a different substance. True or False
HACTEHA [7]
I am pretty sure that the answer is true
6 0
3 years ago
Read 2 more answers
Other questions:
  • What net ionic equation describes the reaction when these solutions are mixed?
    10·1 answer
  • What is the mass of 3.75 moles of NaCl
    6·2 answers
  • What is the formula for Tetracarbon Decachloride?
    14·1 answer
  • Describe how you would use the information depicted in the potential energy diagram below to determine the enthalphy change of t
    10·1 answer
  • How is the mass of a liquid substance affected after it freezes?
    13·1 answer
  • 5 points<br> What do you think photosynthesis means ?
    7·1 answer
  • Mixture of acid and base
    11·1 answer
  • STOICHIOMETRY AND PERCENT PURITY
    13·1 answer
  • A system in which heat moves through the system
    8·1 answer
  • 3) What is the new strategy for disposing of nuclear waste? How is this strategy still dangerous?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!