Homework Answers
Add Answer to:
10.7 10.00 mL of a solution of Hg2+ and 25.00 mL of 0.04516 M EDTA are...
10.6 10.00 mL of a sample of a solution containing Feand Co are added to 100...
10.6 10.00 mL of a sample of a solution containing Feand Co are added to 100 mL of pH 4.5 buffer and then titrated to a Cu-PAN endpoint with 18.82 mL of 0.05106 M EDTA. Then, 25.00 mL of the same of the same solution are added to 100 mL of pH 4.5 buffer along with 10 mL of 1 M potassium fluoride, which is added to mask the Fe'. This solution was titrated to a Cu-PAN endpoint with 13.40...
Water Hardness by EDTA Titration Objective: To determine [Ca2+,MG2+] and [Mg2+] concentration in an unknown water...
Water Hardness by EDTA Titration Objective: To determine [Ca2+,MG2+] and [Mg2+] concentration in an unknown water sample A 0.0107 molarity solution of EDTA is prepared for the experiment. 25 mL of an unknown is pipetted and diluted 100 mL with distilled water and adjusted to a pH between 8 and 10 with NH4OH. A 10.00 mL portion of the diluted unknown is transferred to a 250 mL flask with 3 mL of pH 10 ammonia buffer and tiny amount of...
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2...
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2], and what is the pCa? The formation constant of CaY, Kaa 5.0 x 1010, and α4 of EDTA at pH 10.0 is 0.35
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point...
23. A 25.00 mL water sample is titrated with a 0.0120 M EDTA solution. The equivalence...
23. A 25.00 mL water sample is titrated with a 0.0120 M EDTA solution. The equivalence point is reached when 17.0 mL of the EDTA is added. The hardness in the sample was ppm CаCОз. a) 817 b) 219 c) 120 d) 346 e) none of the above
3. A 25.00 mL 0.0250 M calcium carbonate sample is titrated with 14.3 mM EDTA solution....
3. A 25.00 mL 0.0250 M calcium carbonate sample is titrated with 14.3 mM EDTA solution. Both sample and titrant are buffered at pH = 10.0 a. What is the titration reaction and what is the value of the conditional formation constant? b. What is the calcium ion concentration when 12.35 mL of titrant has been added? c. What is pCa2+ at the equivalence volume?
Consider the titration of 30.0 mL of 0.0100 M CoSO4 with 0.0150 M EDTA in a...
Consider the titration of 30.0 mL of 0.0100 M CoSO4 with 0.0150 M EDTA in a solution buffered to pH 9.00. Calculate pCo2+ at 20.0 mL of EDTA added. Report the answer to three significant figures.
1. A 10.00 mL aliquot of 0.010 M CaCO3 is titrated with 18.22 mL of EDTA...
1. A 10.00 mL aliquot of 0.010 M CaCO3 is titrated with 18.22 mL of EDTA solution. What is the EDTA molarity? 2. A 250.0 mL water sample requires 30.85 mL of the EDTA solution from question 1 to reach the calmagite endpoint. What was the molarity of the hard metal ions in the water sample? 3. If the metal ions in the water sample of question 2 are assumed to be Ca2+ from CaCO3, express the concentration in ppm...
1.639 g of an unknown diprotic acid are used to make a 100.00 mL solution. Then 25.00 mL of this solution is transferred...
1.639 g of an unknown diprotic acid are used to make a 100.00 mL solution. Then 25.00 mL of this solution is transferred to an Erlenmeyer flask and is titrated with 0.1032 M NaOH. The titration endpoint is reached after 0.00414 mol of NaOH is added using the burette. What is the molar mass of the diprotic acid? Provide your answer to the correct number of significant figures.
Ex. 13.4 The analysis of 10.00 mL 0.0100 M Ca²+ solution in water at pH 10.00...
Ex. 13.4 The analysis of 10.00 mL 0.0100 M Ca²+ solution in water at pH 10.00 that was titrated using 0.0050 M EDTA. The conditional formation constant for this reaction under these conditions is 1.75X1010. What values of pCa would be expected (a) at the beginning of the titration; (b) 50% of the way through this titration; (c) at the equivalence point; (d) after an excess of 10.00 mL titrant has been added to this sample?
A titration was performed to standardize an EDTA solution. a) A 25.00 mL aliquot of a...
A titration was performed to standardize an EDTA solution. a) A 25.00 mL aliquot of a standard solution containing 0.01500 M Ca2+ required 42.87 mL of EDTA to reach the endpoint. The molarity of the EDTA solution is: ________ M b) That same EDTA solution was then used to titrate an unknown hard water sample. A 40.00 mL aliquot of unknown hard water required 34.21 mL of EDTA solution to reach a distinct endpoint. The concentration of Ca2+ ions (assuming...
10.6 10.00 mL of a sample of a solution containing Feand Co are added to 100 mL of pH 4.5 buffer and then titrated to a Cu-PAN endpoint with 18.82 mL of 0.05106 M EDTA. Then, 25.00 mL of the same of the same solution are added to 100 mL of pH 4.5 buffer along with 10 mL of 1 M potassium fluoride, which is added to mask the Fe'. This solution was titrated to a Cu-PAN endpoint with 13.40...
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2], and what is the pCa? The formation constant of CaY, Kaa 5.0 x 1010, and α4 of EDTA at pH 10.0 is 0.35
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point...
23. A 25.00 mL water sample is titrated with a 0.0120 M EDTA solution. The equivalence point is reached when 17.0 mL of the EDTA is added. The hardness in the sample was ppm CаCОз. a) 817 b) 219 c) 120 d) 346 e) none of the above
Ex. 13.4 The analysis of 10.00 mL 0.0100 M Ca²+ solution in water at pH 10.00 that was titrated using 0.0050 M EDTA. The conditional formation constant for this reaction under these conditions is 1.75X1010. What values of pCa would be expected (a) at the beginning of the titration; (b) 50% of the way through this titration; (c) at the equivalence point; (d) after an excess of 10.00 mL titrant has been added to this sample?
Most questions answered within 3 hours.
-
I just took a final for chemistry 2. There were alot of
questions on cell potential....
asked 1 minute ago -
In which region of the country did Methodists and
Baptists have the largest following?
a. The...
asked 1 minute ago -
A man is standing on a ledge when he throws a ball. The speed of
the...
asked 9 minutes ago -
Facebook Marketing benefit: How is this tool useful for
marketing purposes? Identify and explain at least...
asked 21 minutes ago -
What are the five considerations relevant to the
substantive fairness of a dismissal for permanent incapacity?...
asked 21 minutes ago -
Prince Electronics, a manufacturer of consumer electronic
goods, has five distribution centers in different regions of...
asked 23 minutes ago -
1.) For the following general reaction, rate = k[A]2 and k = 1.3
× 10−2 M−1...
asked 26 minutes ago -
In the Enron documentary(Netflix) What ethical issues did you
observe and who was responsible for them?
asked 27 minutes ago -
Many products fail, some of them spectacularly. Why do you
believe the failure rate for new...
asked 26 minutes ago -
An important news announcement is transmitted by radio waves to
people who are 65 km away,...
asked 45 minutes ago -
On June 30, 2021, Rosetta Granite purchased equipment for
$130,000. The estimated useful life of the...
asked 45 minutes ago -
. If you were the CEO of Agricole, would you pursue an
acquisition target in the...
asked 45 minutes ago