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
mezya [45]
3 years ago
8

A 1.0L buffer solution contains 0.100 molHC2H3O2 and 0.100 molNaC2H3O2. The value of Ka for HC2H3O2 is 1.8×10−5. Calculate the p

H of the solution upon the addition of 10.0 mL of 1.00 MHCl to the original buffer.
Express the your answer to two decimal places.
***will mark Brainliest for right answer ***
Chemistry
1 answer:
Crazy boy [7]3 years ago
7 0
Starting pH = pKa because the acid and conjugate base have equal concentrations.
pH = pKa = -log(1.8*10–5) = 4.74

0.0100 L • 1.00 M = 0.0100 mol HCl, which reacts with the conjugate base, producing 0.0100 mol of weak acid.

You now have 0.110 mol weak acid and 0.090 mol conjugate base. Use the Henderson-Hasselbach equation to solve for pH now.

pH = 4.74 + log(0.090/0.110) = 4.65

The equation technically says to use concentrations of the acid and base, but that doesn’t actually matter, because it would give the same answer.
You might be interested in
Which best defines the term drug
Nuetrik [128]

Answer:

a medicine or other substance which has a physiological effect when ingested or otherwise introduced into the body.

Explanation:

3 0
3 years ago
Read 2 more answers
Which diagram represents an electrically neutral atom​?
Rom4ik [11]

Answer:

D

Explanation:

I hope this right, I'm sorry if it's not.

For an atom to be neutral, it has to have the same amount of protons and electrons. Because protons and electrons have opposite charges, when there is an equal amount of them they balance each other out

5 0
3 years ago
Read 2 more answers
What is the concentration, in m/v percent, of a solution prepared from 50 g NaCl and 2.5 L of solution?
Serjik [45]
When we convert the given mass in grams and volume in liters to m/v percent, we recall that m/v percent is expressed as grams/100 milliliters. In this case the expression becomes (50 grams/ 2500 L)*(0.1L/100ml), that is equal to 0.002 grams/ 100 mL. Hence the the concentration is equal to 0.2 m/v percent.
4 0
3 years ago
What's an example of using evaporation to separate a mixture in everyday life?
Fed [463]

An example can be perspiration or even rain.

Hope this helps.

8 0
3 years ago
PLEASE HELP
torisob [31]

Decrease

Increase  

Increase

Decrease

Increase

Decrease

Hope this helps! :)

4 0
3 years ago
Other questions:
  • _____________ are scientists who study the specific properties of any given potential toxin
    8·1 answer
  • What is the chemical name for CaCO3?
    7·2 answers
  • Which of the following chemical agents is used for sterilization? Which of the following chemical agents is used for sterilizati
    12·1 answer
  • Explain the difference between physical equilibrium and chemical equilibrium. Give two examples of each.
    7·1 answer
  • With carbon dioxide, what phase change takes place when the temperature
    13·1 answer
  • Which question is the best scientific question?
    12·1 answer
  • What happens to valence electrons in ionic bonding? this is a question i know but gives me answer choices im not sure about
    15·1 answer
  • What occurs in photosynthesis reaction
    12·1 answer
  • Explain<br> Question<br> 1. An atom makes<br> up a compound<br> True/False
    8·2 answers
  • Calculate the volume of the gas in the balloon using the equation for volume of a sphere​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!