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
Sergio [31]
3 years ago
11

The equilibrium concentrations of the reactants and products are [ HA ] = 0.260 M [HA]=0.260 M , [ H + ] = 2.00 × 10 − 4 M [H+]=

2.00×10−4 M , and [ A − ] = 2.00 × 10 − 4 M [A−]=2.00×10−4 M . Calculate the value of p K a pKa for the acid HA HA .
Chemistry
1 answer:
ValentinkaMS [17]3 years ago
7 0

Answer:

pKa of the acid HA with given equilibrium concentrations is 6.8

Explanation:

The dissolution reaction is:

HA ⇔ H⁺ + A⁻

So at equilibrium, Ka is calculated as below

Ka = [H⁺] x [A⁻] / [HA] = 2.00 x 10⁻⁴ x 2.00 x 10⁻⁴ / 0.260

    = 15.38 x 10⁻⁸

Hence, by definition,

pKa = -log(Ka) = - log(15.38 x 10⁻⁸) = 6.813

You might be interested in
Does anyone know this!?
saul85 [17]

Answer:

I don’t know this answer sorry

Explanation:

3 0
3 years ago
Which of the following is a measure of velocity?
padilas [110]

The correct answer is 30 seconds

6 0
3 years ago
Read 2 more answers
Most of the high-level radiation associated with nuclear energy is
PSYCHO15rus [73]
Waste materials, mining and transportation of radioactive fuels, radiation emissions from nuclear sites
3 0
3 years ago
What is carbon? What does it do?
Archy [21]

Answer:

Carbon is in carbon dioxide, which is a greenhouse gas that works to trap heat close to Earth. Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth's temperature, make up the food that sustains us, and provide energy that fuels our global economy. Most of Earth's carbon is stored in rocks and sediments. The rest is located in the ocean, atmosphere, and in living organisms

Explanation:

Hope it helps. Can you give me BRAINLIEST ANSWER. Thank you

7 0
2 years ago
The removal of silver tarnish from silverware using aluminum foil and a solution of electrolyte is an example of
eimsori [14]

Answer:

The answer is C. An electrochemical cell.

Explanation:

The aluminum ion react with the sulfide to form aluminum sulfide.

8 0
3 years ago
Other questions:
  • Match each of the three descriptions of a volume to the appropriate metric unit of volume
    13·1 answer
  • What does amoeba use to move and ingest prey?
    15·1 answer
  • How are the elements arranged in the modern periodic table?
    12·1 answer
  • predict where an unknown element that has these properties could fit in the periodic table 62 protons and electrons
    10·1 answer
  • What type of compound is fe3n2?
    11·1 answer
  • What is first and second element of the periodic table?
    6·2 answers
  • You are making a 0.2M solution of sodium acetate in the lab. Sodium acetate has a molecular mass of 82.03 g/mol. How many g of s
    11·1 answer
  • What is a homogeneous mixture?
    7·2 answers
  • I don’t know what are the ones that are left ,can someone help me please
    6·1 answer
  • Help me pLSSSSSSSSSSSSSSS​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!