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
rewona [7]
1 year ago
8

What is the ph of a solution which is 0. 023 m in weak base and 0. 037 m in the conjugate weak acid ( a = 7. 1 × 10^−6)?

Chemistry
1 answer:
Rzqust [24]1 year ago
5 0

The pH of a solution which is 0.023 m in weak base and 0 037 m in the conjugate weak acid whose Ka= 7.1 × 10⁻⁶ is 4.93.

pH determines the amount of hydrogen and hydroxide ions in a solution. It is the negative logarithm of hydrogen ion concentration.

Given,

Ka= 7.1 × 10⁻⁶

Weak base = 0.023M

Acid = 0.037M

Using base dissociation constant, Ka we can calculate pKa by:

pKa = -log [Ka]

pKa = -log [7.1 × 10⁻⁶]

pKa = 5.15

A weak base and its conjugate acid are present in equal proportions in buffer solution. Using the Henderson-Hasselbalch equation, we can find out the pH of a buffer solution that constitutes a weak base and its conjugate acid.

Using Henderson-Hasselbalch equation,

pH = pKa + log [Weak base / acid]

pH = 5.15 + log [0.023 / 0.037]

pH = 5.15 + log[0.6]

pH = 5.15 - 0.22

pH = 4.93

Therefore, the pH of the solution is 4.93.

Learn more about pH here, brainly.com/question/22390063

#SPJ4

     

   

You might be interested in
Which of the following statements is true for an exothermic reaction?
shutvik [7]
The enthalpy change for an exothermic reaction is negative because heat is being released, so that takes out two of the responses. Since energy is being released into the surroundings due to the exothermic reaction, the potential energy of the products is lower than that of the reactants. Energy is being put in to make the reaction occur, but then that energy is all being released into the surroundings thus a lower potential energy level for the products
6 0
3 years ago
Read 2 more answers
Which numbers are shown in the symbol for a radioactive nuclide?
stira [4]

Answer:

The answer is C.

"The atomic number and mass number."

Explanation:

Got it right on Edge!

Have a good day!

7 0
2 years ago
Read 2 more answers
What is the amount of heat absorbed when the temperature of 75 grams of water increases from 20 to 75
german

Answer:

55°C

Explanation:

original is 20

after gaining heat is 75

75 - 20 = 55

8 0
2 years ago
Read 2 more answers
A chemist requires 0.881 mol Na2CO3 for a reaction. How many grams does this correspond to?
irga5000 [103]
Molar mass Na2CO3 = 106 g/mole
Using dimensional analysis:
0.787 moles Na2CO3 x 106 g/mole Na2CO3 = g Na2CO3
Answer = 83.4 g Na2CO3
5 0
2 years ago
"The statements in the following multiple choices deal with various aspects of the relationship between vapor pressure and inter
solong [7]

Answer:

Explanation:

a ) false.

NH₃ is more polar molecule than PH₃ so inter-molucular attraction is greater in NH₃ ( hydrogen bond ) . Hence vapour pressure is low for NH₃ .

b ) false .

The average kinetic energy of boiling water molecules is lower on a mountaintop than it is at sea level. It is so because water boils at lower temperture on mountain and kinetic energy of molecules depends upon temperature .

c ) false

vapour pressure depends upon temperature .

d ) True

CCl4 is more volatile than CBr4

e ) false

vapour pressure increases as temperature increases.

8 0
3 years ago
Other questions:
  • What is the name of this hydrocarbon
    11·1 answer
  • In an acid-base neutralization reaction 38.74 ml of 0.500 m potassium hydroxide (ki) reacts with 50.00 ml of sulfuric acid solut
    15·2 answers
  • Boiling and melting points exploration<br>​
    9·1 answer
  • How can a scientist ensure that his or her data are reliable? by making a single observation
    14·2 answers
  • How many of the carbon–carbon bonds in the compound have staggered conformers that are all equally stable?
    12·2 answers
  • True or false all countries are legally bound to survey and monitor for disease within their bodies
    6·1 answer
  • What is the chemical formula for the ionic compound calcium chloride?
    13·2 answers
  • Which gas law would apply to the following scenario.
    6·1 answer
  • A neutral atom has 12 protons and 13 neutrons in its nucleus. What is its mass number?
    9·1 answer
  • Which of the following types of radiation can be blocked with only a sheet of paper?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!