Homework Answers
Add Answer to:
This is from a Study of Buffer Solutions and pH of Salt
Solutions Lab. I calculated...
I need help with the problem in the last photo.. I thought I’d post my lab...
I need help with the problem in the last photo.. I thought I’d
post my lab explanation and data if that helps you get a better
understanding, but it’s just the question at the end. I know I need
to use the Henderson Hasselbach equation.. so... 4.70 = pKa + log(
[acetate-ion] / [acetic-ion] ) and solve for pKa, then Ka.. but how
do I find the concentrations to put in the log fraction?
Thanks, in advance!
Learning Objectives: 1....
I know some of the measured pH values are a little off due to error in...
I
know some of the measured pH values are a little off due to error
in the lab, but I need help filling out the “Ion Hydrolyzed” table
and then the “Net Ionic Equation” part. I remember doing net ionic
equations in General Chemistry I, bit don’t see how it applies
here.
Thanks, in advance! (i will rate!)
Learning Objectives: 1. To test the acidic and basic properties of ionic compounds. 2. To create a buffer solution and calculate its...
Properties of Buffers Lab. I need help with problems 7 & 8. They’re pretty similar, but...
Properties of Buffers Lab.
I need help with problems 7 & 8. They’re pretty similar,
but I’m confused on whether I’m doing them right.
I need to calculate the moles of HCl and NaOH and then somehow
insert them into the log fraction in the Henderson Hasselbach
formula, is that right?
Procedure (values are needed in procedure):
Measured values during lab that I’ll be comparing #6/7/8
to:
Questions I need help with:
Part B Procedures: 1. Weigh about 3.5g of...
F. pH of Buffer after the addition of the Strong Base 1. Calculate the expected pH...
F. pH of Buffer after the addition of the Strong Base 1. Calculate the expected pH of this solution. 50.0 mL buffer + 2.0mLION NAOH pH 2. Measured pH of this solution. pH 4.59 3. What is the percent error between the calculated and measured value? What are some of the possible sources of this error? % error pH of Buffer after the addition of the Strong Base: ix. Measure out 50.0 ml the buffer in part D and 2.0...
how would you calculate the expected pH for solution 7, 8, 9, 10, and 11? (I...
how
would you calculate the expected pH for solution 7, 8, 9, 10, and
11? (I am confused on how you calculate the dilutions for finding
the expected pH too)
Ka= 1.4x10^-5
pKa= 4.85
Part B - The Effect of Adding Acid or Base to a Buffered Solution Solution 6 16. Prepare a buffer solution by mixing 30.0 mL of 0.10 M HOAc and 40.0 mL of 0.10 M NaOAc. Measure the pH of the resulting solution with the pH...
I don't understand what calculations I would have made to create the buffer solution from Part...
I don't understand what calculations I would have made to create
the buffer solution from Part D of the lab. I understood the
procedures I took to create the solution but when the report asks
to show the calculations used to prepare the buffer solution I am
not sure other than mixing the volumes indicated in the procedures
section.
Thank you
pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...
The buffer solution is made of 50ml of 1.0M CH3COOH and 50ml of 1.0M NaCH3COO. Please...
The buffer solution is made of 50ml of 1.0M CH3COOH and 50ml of
1.0M NaCH3COO.
Please find the expected pH of the buffer after the addition of
the strong base, and the percent error between the expected pH and
the measured pH of the solution.
pH of Buffer after the addition of the Strong Base: ix. Measure out 50.0 mL the buffer in part D and 2.0 mL of 1.0 M NaOH into a clean beaker. X. Rinse the pH...
Please help, I'm so confused!!!! This is due wednesday night!!! i'm gonna fail :(((( pH of...
Please help, I'm so confused!!!! This is due wednesday night!!!
i'm gonna fail :((((
pH of Buffer Solutions Procedure: Acetic Acid-Sodium Acetate Buffer (pKa acetic acid = 4.75) Weigh about 3.5 g of Na2C2H302 3H2O, record the exact mass, and add to a 250 ml beaker. Measure exactly 8.8 mL of 3.0 M acetic acid (use 10 mL grad cylinder) and add to the beaker containing the sodium acetate. • Measure exactly 55.6 mL of distilled water and add to...
I need to know if I calculated the acetate buffer correctly & how to calculate the...
I need to know if I calculated the acetate buffer correctly
& how to calculate the change in pH when HCl is added...
The following should be attached to this worksheet: 2 plots of volume vs. pH data. Data sheet stapled to back of DRA. 1. Calculate the pH of the acetate buffer. Show the calculation below. Calculation: Ho t t 419 [Cathoz ot pH= pkatlog HGH sos] ΠpH=4.745 + log NAH ** = 4.65 (0.2 m m 2....
buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added...
buffer is HC2H3O2/NaC2H3O2
difference in PH: big change when added to buffer. small
change when added to water. why?
why such a bug change when you add an acud or base to water
but not to butfer?
1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
I need help with the problem in the last photo.. I thought I’d
post my lab explanation and data if that helps you get a better
understanding, but it’s just the question at the end. I know I need
to use the Henderson Hasselbach equation.. so... 4.70 = pKa + log(
[acetate-ion] / [acetic-ion] ) and solve for pKa, then Ka.. but how
do I find the concentrations to put in the log fraction?
Thanks, in advance!
Learning Objectives: 1....
I
know some of the measured pH values are a little off due to error
in the lab, but I need help filling out the “Ion Hydrolyzed” table
and then the “Net Ionic Equation” part. I remember doing net ionic
equations in General Chemistry I, bit don’t see how it applies
here.
Thanks, in advance! (i will rate!)
Learning Objectives: 1. To test the acidic and basic properties of ionic compounds. 2. To create a buffer solution and calculate its...
Properties of Buffers Lab.
I need help with problems 7 & 8. They’re pretty similar,
but I’m confused on whether I’m doing them right.
I need to calculate the moles of HCl and NaOH and then somehow
insert them into the log fraction in the Henderson Hasselbach
formula, is that right?
Procedure (values are needed in procedure):
Measured values during lab that I’ll be comparing #6/7/8
to:
Questions I need help with:
Part B Procedures: 1. Weigh about 3.5g of...
F. pH of Buffer after the addition of the Strong Base 1. Calculate the expected pH of this solution. 50.0 mL buffer + 2.0mLION NAOH pH 2. Measured pH of this solution. pH 4.59 3. What is the percent error between the calculated and measured value? What are some of the possible sources of this error? % error pH of Buffer after the addition of the Strong Base: ix. Measure out 50.0 ml the buffer in part D and 2.0...
how
would you calculate the expected pH for solution 7, 8, 9, 10, and
11? (I am confused on how you calculate the dilutions for finding
the expected pH too)
Ka= 1.4x10^-5
pKa= 4.85
Part B - The Effect of Adding Acid or Base to a Buffered Solution Solution 6 16. Prepare a buffer solution by mixing 30.0 mL of 0.10 M HOAc and 40.0 mL of 0.10 M NaOAc. Measure the pH of the resulting solution with the pH...
I don't understand what calculations I would have made to create
the buffer solution from Part D of the lab. I understood the
procedures I took to create the solution but when the report asks
to show the calculations used to prepare the buffer solution I am
not sure other than mixing the volumes indicated in the procedures
section.
Thank you
pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...
The buffer solution is made of 50ml of 1.0M CH3COOH and 50ml of
1.0M NaCH3COO.
Please find the expected pH of the buffer after the addition of
the strong base, and the percent error between the expected pH and
the measured pH of the solution.
pH of Buffer after the addition of the Strong Base: ix. Measure out 50.0 mL the buffer in part D and 2.0 mL of 1.0 M NaOH into a clean beaker. X. Rinse the pH...
Please help, I'm so confused!!!! This is due wednesday night!!!
i'm gonna fail :((((
pH of Buffer Solutions Procedure: Acetic Acid-Sodium Acetate Buffer (pKa acetic acid = 4.75) Weigh about 3.5 g of Na2C2H302 3H2O, record the exact mass, and add to a 250 ml beaker. Measure exactly 8.8 mL of 3.0 M acetic acid (use 10 mL grad cylinder) and add to the beaker containing the sodium acetate. • Measure exactly 55.6 mL of distilled water and add to...
I need to know if I calculated the acetate buffer correctly
& how to calculate the change in pH when HCl is added...
The following should be attached to this worksheet: 2 plots of volume vs. pH data. Data sheet stapled to back of DRA. 1. Calculate the pH of the acetate buffer. Show the calculation below. Calculation: Ho t t 419 [Cathoz ot pH= pkatlog HGH sos] ΠpH=4.745 + log NAH ** = 4.65 (0.2 m m 2....
buffer is HC2H3O2/NaC2H3O2
difference in PH: big change when added to buffer. small
change when added to water. why?
why such a bug change when you add an acud or base to water
but not to butfer?
1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
Most questions answered within 3 hours.
-
A 60-Hz, 765-kV, three-phase overhead transmission line has two
ACSR 900 kcmil 54/3 conductors per phase....
asked 42 seconds from now -
The work done by the spring's restoring force
on the free end of a spring while...
asked 21 seconds ago -
Reynold company is considering an investment of $130,000 in
new equipment. The new equipment is expected...
asked 17 minutes ago -
If a company’s stock price (P0) goes up, and nothing else
changes, Ke (the required rate...
asked 4 minutes ago -
As a manager in today society, how can I use Harry Truman's
leadership skills and attributes...
asked 5 minutes ago -
The decomposition of SO2Cl2 is first order
and has a rate constant of + 2.90 x...
asked 5 minutes ago -
Why is protecting equipment an important element of this
concept, and how are some of the...
asked 15 minutes ago -
An asset used in a four-year project falls in the five-year
MACRS class (MACRS Table) for...
asked 17 minutes ago -
Break-even time. Hampton Corporation’s research
and development department is presenting a proposal for new product
research....
asked 20 minutes ago -
At Lake Itasca in Minnesota, the Mississippi river is only 25.0
feet wide. If you are...
asked 21 minutes ago -
A 2.0 μF parallel-plate air-filled capacitor is connected
across a 10 V battery.
(a) Determine the...
asked 32 minutes ago -
Write in Python This program:
1. Correct the compute_cells_state function which receives as
parameter an array...
asked 22 minutes ago