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
Advocard [28]
3 years ago
14

What is the ph of a solution that has 0.075 m ch3cooh and 0.050m nach3coo present? ka for acetic acid = 1.80 x 10-5?

Chemistry
1 answer:
Scilla [17]3 years ago
7 0
Hello!

For solving this problem we first have to determine the pKa of CH₃COOH.

pKa=-log(Ka)=-log( 1,80*10^{-5} )=4,74

Now, we use the Henderson-Hasselbach's equation to determine the pH of the buffer solution:

pH=pKa+log (\frac{NaCH_3COO}{CH_3COOH} )=4,74+log( \frac{0,050M}{0,075M} )=4,56

So, the pH of this solution is 4,56

Have a nice day!
You might be interested in
May someone assist, please...? I don't know how to do chemistry work...
EastWind [94]

Answer:

1) 90.0 mL

2) 11.25 M

3) 0.477 M

4) 144 mL

Explanation:

The main formula that will be used for all these calculations is:

                                                     C₁V₁ = C₂V₂

C stands for concentration and V stands for volume and the subscripts 1 and 2 indicate an initial concentration or volume and a final concentration or volume.

For each problem, it's best to start by figuring out what you have and what you need to find. Figure out if you're looking for an initial value or a final value.

1) We need to find the initial volume. So, take what values you have and plug them in and then solve for whatever variable:

5.00 M · V₁ = 500.0mL · 0.900 M                        - divide by 5.00

C₁ = 90.0 mL

2) This time we're finding the initial concentration:

20.0mL · C₁ = 150.0mL · 1.50 M                          - divide by 20.0mL

C₂ = 11.25 M

3) Now we're finding the final concentration:

12.00mL · 3.50 M = 88.0mL · C₂                         - divide by 88.0mL

C₂ = 0.477 M

4) Finally, we're looking for the final volume:

9.0mL · 8.0 M = 0.50 M · V₂                                - divide by 0.50 M

V₂ = 144mL

6 0
3 years ago
"How does land change temperature compared to water?"
bogdanovich [222]
It’s A. Land heats up and cools quickly then water
3 0
2 years ago
What is the difference between the atomic number and the mass number of an element?
DedPeter [7]

Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic mass is the average mass of all the isotopes of a certain type. It is a weighted average that takes into account the abundances of all of the different isotopes

hope this helps :)

8 0
3 years ago
Read 2 more answers
What is the usable form of nitrogen that is found in the ground?
laila [671]
Nitrate

Hope this helps :))
5 0
3 years ago
What explains the fact that no machine is 100 percent efficient?
kati45 [8]
Hello, to answer your question. It is because all machines require a fuel or source to power it making it imperfect for using some source that may not be renewable.


                    Signed by, Virtouso Sargedog
3 0
3 years ago
Other questions:
  • The balanced chemical reaction equation in stoichiometry is used to..?
    14·1 answer
  • A blue jay's small ,curved feet hepls it grip on branches.Which type of adption is this?
    8·1 answer
  • What is true of a compound?
    6·2 answers
  • 2 points
    15·1 answer
  • Select all the correct answers.
    5·1 answer
  • What is the volume of a salt crystal measuring 1.64 x 10^-2m by 1.5 x 10^-2m by 4.8 x 10^-3
    11·1 answer
  • The formula for binary ionic compound formed between cesium and fluorine
    12·1 answer
  • A science teacher gave a student a sample of a clear liquid labeled "unknown substance." which property would best help the stud
    6·2 answers
  • Hammerhead sharks have weakly-muscled gills and must be in constant motion in the ocean in order to maintain a steady flow of wa
    12·1 answer
  • When you rub an inflated balloonon your head on a dry day,it can make your hair stand up! what force is that?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!