Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise...
- Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise and find that a white gelatinous precipitate forms, but when more NaOH was added the precipitate dissolved again. To another test tube of the same unknown solution is added AgNO3 dropwise, and a white precipitate forms. What salt most likely comprises the unknown solution? Explain your reasoning.
Homework Answers
now
when agno3 is added to this solution then cl- will interact with
Ag+ to form white precipitate of Agcl
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Suppose you have an unknown clear, colorless
solution. In attempt to identify it, you add NaOH
dropwise...
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH...
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise and find that a white gelatinous precipitate forms, but when more NaOH was added the precipitate dissolved again. To another test tube of the same unknown solution is added AgNO3 dropwise, and a white precipitate forms. What salt most likely comprises the unknown solution? Explain your reasoning (3 points) 2. Suppose you have a different unknown solution that you know to be 50/50...
- You have a clear colorless unknown solution with a group 1 cation. After adding some...
- You have a clear colorless unknown solution with a group 1 cation. After adding some hydrochloric acid solution you obtain a white precipitate. Addition of ammonia causes the white precipitate to dissolve. Acidifying with nitric acid makes the precipitate reappear. Which cation do you suggest was in the unknown sample? Write the net ionic equation of any reaction that may occur (4P). 3. When testing for the presence of sulfate, what reagent is added to the solution? What final...
3. What tests would you use to identify a solution of FeCl3? 4. A flame test of a colorless solution gives a bright...
3. What tests would you use to identify a solution of FeCl3? 4. A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO, is added. When HCl is added to the unknown solution, bubbles form. What is the compound in the colorless solution?
Identify an unknown solution (1, 2, 3 and 4) and fill the vacancies in the table...
Identify an unknown solution (1, 2, 3 and 4) and fill
the vacancies in the table
Procedure
The unknown solutions are : HCl, NaOH,
Acetic acid, Na2CO3
Test each solution with litmus paper. Record the results in the
data table below.
Take little of each solution in a test tube and add 5 drops of
silver nitrate to each solution. Record the results in the data
table.
Take little of each solution in a test tube and add two drops...
Identify an unknown solution (1, 2, 3 and 4) and fill the vacancies in the table...
Identify an unknown solution (1, 2, 3 and 4) and fill the vacancies in the table Procedure The unknown solutions are : HCI, NaOH, Acetic acid, Na2CO3 1- Test each solution with litmus paper. Record the results in the data table below. 2- Take little of each solution in a test tube and add 5 drops of silver nitrate to each solution. Record the results in the data table. 3- Take little of each solution in a test tube and...
Pre-Lab Study Questions 16 How can the presence of an ion in a solution be detected 2. What tests would you use t...
Pre-Lab Study Questions 16 How can the presence of an ion in a solution be detected 2. What tests would you use to identify a solution of Ag3PO4? 3. What tests would you use to identify a solution of FeCly? 4. A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO3 is added. When HCl is added to the unknown solution, bubbles form. What is the...
1. If your original unknown is colorless, what ions are absent from your unknown? 2. If...
1. If your original unknown is colorless, what ions are absent
from your unknown?
2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
QUESTIONS: Expt. 21 Name: Silver nitrate is added to solution containing an unknown salt. An off-white...
QUESTIONS: Expt. 21 Name: Silver nitrate is added to solution containing an unknown salt. An off-white colored precipitate Torms Nitric acid is added to the mixture the precipitate dissolves and gas is given off Analyze this data and determine the anion present a CH b. Br d POS- e. CO 2 A dark glass bottle of chemicals is found in cleaning out an old basement Part of the label has been eaten away with age. Only the last part of...
I concluded that my unknown was Pb2+. since yellow precipitate formed. can you help me answer...
I concluded that my unknown was Pb2+. since yellow
precipitate formed. can you help me answer the questions for the
Known and unknown report
Qualitative Analysis: Group I Cations 10 ORECTIVES A Leam some chemistry of Group I cations, R Analyze an unknown for Group I cations. THEORY AND DISCUSSION Group I cations are precipitated as insoluble chlorides: Ag, Pb, Hg2 +Cr-AgCl, PbCh, HgCla The colors of the following species will be helpful in the analysis for Group I cations....
2) You are presented with an unknown that possibly has Ag-, Bi-, Sn+, Zn2+, Co2+ and...
2) You are presented with an unknown that possibly has Ag-, Bi-, Sn+, Zn2+, Co2+ and Na'. You divide the solution into three equal volumes, labeling one "A," one "B," and one "C." To "A" you add 6 M HCl and do not observe any precipitate forming. In tube B, you add 6 M HCl until the pH is 0.5 then add thioacetamide and heat the solution in a hot water bath for seven minutes, eventually observing a black precipitate....
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise and find that a white gelatinous precipitate forms, but when more NaOH was added the precipitate dissolved again. To another test tube of the same unknown solution is added AgNO3 dropwise, and a white precipitate forms. What salt most likely comprises the unknown solution? Explain your reasoning (3 points) 2. Suppose you have a different unknown solution that you know to be 50/50...
- You have a clear colorless unknown solution with a group 1 cation. After adding some hydrochloric acid solution you obtain a white precipitate. Addition of ammonia causes the white precipitate to dissolve. Acidifying with nitric acid makes the precipitate reappear. Which cation do you suggest was in the unknown sample? Write the net ionic equation of any reaction that may occur (4P). 3. When testing for the presence of sulfate, what reagent is added to the solution? What final...
3. What tests would you use to identify a solution of FeCl3? 4. A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO, is added. When HCl is added to the unknown solution, bubbles form. What is the compound in the colorless solution?
Identify an unknown solution (1, 2, 3 and 4) and fill
the vacancies in the table
Procedure
The unknown solutions are : HCl, NaOH,
Acetic acid, Na2CO3
Test each solution with litmus paper. Record the results in the
data table below.
Take little of each solution in a test tube and add 5 drops of
silver nitrate to each solution. Record the results in the data
table.
Take little of each solution in a test tube and add two drops...
Identify an unknown solution (1, 2, 3 and 4) and fill the vacancies in the table Procedure The unknown solutions are : HCI, NaOH, Acetic acid, Na2CO3 1- Test each solution with litmus paper. Record the results in the data table below. 2- Take little of each solution in a test tube and add 5 drops of silver nitrate to each solution. Record the results in the data table. 3- Take little of each solution in a test tube and...
Pre-Lab Study Questions 16 How can the presence of an ion in a solution be detected 2. What tests would you use to identify a solution of Ag3PO4? 3. What tests would you use to identify a solution of FeCly? 4. A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO3 is added. When HCl is added to the unknown solution, bubbles form. What is the...
1. If your original unknown is colorless, what ions are absent
from your unknown?
2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
QUESTIONS: Expt. 21 Name: Silver nitrate is added to solution containing an unknown salt. An off-white colored precipitate Torms Nitric acid is added to the mixture the precipitate dissolves and gas is given off Analyze this data and determine the anion present a CH b. Br d POS- e. CO 2 A dark glass bottle of chemicals is found in cleaning out an old basement Part of the label has been eaten away with age. Only the last part of...
I concluded that my unknown was Pb2+. since yellow
precipitate formed. can you help me answer the questions for the
Known and unknown report
Qualitative Analysis: Group I Cations 10 ORECTIVES A Leam some chemistry of Group I cations, R Analyze an unknown for Group I cations. THEORY AND DISCUSSION Group I cations are precipitated as insoluble chlorides: Ag, Pb, Hg2 +Cr-AgCl, PbCh, HgCla The colors of the following species will be helpful in the analysis for Group I cations....
2) You are presented with an unknown that possibly has Ag-, Bi-, Sn+, Zn2+, Co2+ and Na'. You divide the solution into three equal volumes, labeling one "A," one "B," and one "C." To "A" you add 6 M HCl and do not observe any precipitate forming. In tube B, you add 6 M HCl until the pH is 0.5 then add thioacetamide and heat the solution in a hot water bath for seven minutes, eventually observing a black precipitate....
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