The pH is adjusted to 0.5 and thioacetamide is added to an unknown containing Group 2...
The pH is adjusted to 0.5 and thioacetamide is added to an unknown containing Group 2 cations. A black precipitate is formed, insoluble in NaOH but completely soluble in HNO3. When NH3 is added a white precipitate is forms and the solution turns deep blue. 1. What ion(s) are clearly absent? 2. What ion(s) are clearly present? 3. Write the net ionic equations for all observations
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
The pH is adjusted to 0.5 and thioacetamide is added to an
unknown containing Group 2...
3.Cold water is added to each of the following pairs of solid salts. In each case...
3.Cold water is added to each of the following pairs of solid salts. In each case state whether a precipitate wil be present, and if so what its composition is. Note: The precipitate may be either one or both of the original salts or one or more of the products formed by reaction between the salts. (10 pts) a. Pb(C2H2O2)2 and NaCl b. BaSO4 and Cus c. Ni(NO3)2 and CaCl2 d. AgCl and Cu(NO3)2 e. Na2CO3 and MgCl2 4. In...
2. A solution that may contain Sn.Bi. Cu? and Cdions is treated with thioacetamide in an...
2. A solution that may contain Sn.Bi. Cu? and Cdions is treated with thioacetamide in an acidic medium. The black precipitate that forms is partly soluble in a strongly alkaline solution. The precipitate that remains is soluble in 6M HNO, and gives a blue solution when treated with excess NH Based on this information, which ions are present, which are absent, and which are still in doubt? Present Absent Snut Cu 2+ Bi 34 3. Explain how controlling the solution...
2. How are the Group I cations first precipitated from solution? 3. Write the net-ionic equation...
2. How are the Group I cations first precipitated from solution? 3. Write the net-ionic equation for the initial precipitation of any one Group I cation from your unknown solution. 4. Lead(II) chromate is used as a yellow pigment in paints. Write the net-ionic equation for its formation in this Experiment during the confirmatory test for lead(II). 5. When ammonia is added to a white precipitate of mercury(I) chloride, the precipitate turns grayish-black. Write the net-ionic equation for what happens,...
2. A solution that may contain Sn.Bi. Cu and Cd²+ ions is treated with thioacetamide in...
2. A solution that may contain Sn.Bi. Cu and Cd²+ ions is treated with thioacetamide in an acidic medium. The black precipitate that forms is partly soluble in a strongly alkaline solution. The precipitate that remains is soluble in 6M HNO, and gives a blue solution when treated with excess NH. Based on this information, which ions are present, which are absent, and which are still in doubt? 3. Explain how controlling the solution pH allows separation of Group II...
QUESTION 1 10 points Save Answer be Treatment of an unknown solution containing Group III cations...
QUESTION 1 10 points Save Answer be Treatment of an unknown solution containing Group III cations with sodium hydroxide and hydrogn alpero xides produces a yellowish solution and a green precipitate. Which cations are most probaby presetn? Aluminum and Chromium aluminum and nickel Chromium and Nickel Iron and Chromium QUESTION 2 10 points Save Answer which of the following is added to the nickel (II)ion to form a blue complex ion? ammonia Dimethylglyoxime (DMG) KSCN NaOH QUESTION 3 10 points...
A deep blue Group III unknown formed a blue-green precipitate when treated with NH_3/NH_4 Cl. The...
A deep blue Group III unknown formed a blue-green precipitate when treated with NH_3/NH_4 Cl. The mixture was centrifuged and separated. The precipitate dissolved in NaOH to form a green solution. The solution turned purple when treated with BiO_3 in acid solution. All other tests were negative. What ion(s) is/are present? What ion(s) is/are certainly absent? Write net ionic equations for all observations mentioned above, using the ions that you have determined to be present. One of the reactions will...
Water is added to a group chloride precipitate and heated. The precipitate seems unaffected by heating...
Water is added to a group chloride precipitate and heated. The precipitate seems unaffected by heating The supernatant is separated from the precipitate while hot and treated with K2CrO4 (aq) but no precipitate forms. The white precipitate remaining from the first step is treated with NH3 (aq) and turns a grey/black color. When the ammoniacal supernatant is acidified with nitric acid, a white precipitate forms Sort the statements from the paragraph above into bins indicating what information the statement provided...
I need help with questions 4 and 7 please 1 Cation Analysis Prelaboratory Questions DIXON No.2...
I need help with questions 4 and 7 please
1 Cation Analysis Prelaboratory Questions DIXON No.2 HB 1. Ag, Hg2+, and Pb2+ belong to group I cations. What specific reaction do they all undergo? What is the distinctive observation for this reaction? The observation, that they will occur is that a white preciptate will form. They will react with dilluted HCl. 2. Describe the solubility of compounds AgCl, PbCl2, and HgCl, in a) room temperature water. AGCI PbCl₂ insluable HgzCl₂...
UNKNOWN SOLUTION Be sure to indicate solution (soln) or precipitate (ppt) Group 3 Reagent Cation(s) present...
UNKNOWN SOLUTION Be sure to indicate solution (soln) or precipitate (ppt) Group 3 Reagent Cation(s) present Group Procedure reference G3-1 (ex: G1-6) Observations and net lonic equations If additional space is needed, reference the Group Procedure Black PPT Felt NH,ỰNH. Thioacetamide (TA), G3-2 6 M HCI Heat Fert G3-3 6 MNH, Once HCI coas added to ppt, puff of smoke came, ppt remained black colorless ppt , 10 drops to make soluty basic to litmus paper I once added to...
UNKNOWN NUMBER Indicate observed results in the appropriate square. If no precipate is observed, record an...
UNKNOWN NUMBER Indicate observed results in the appropriate square. If no precipate is observed, record an S for soluble. If a slight cloudiness is observed, record an SS for slightly soluble. If a precipitate is observed, record an I for insoluble Record the color and appearance of precipitate in cach case. Anion d | Br” | IP | Co” so OH S1- Cation Ae chory vedow Whichodr Mg Screar I burt Biun Dari Branta Iss- crestul anfte Iss. Crystal white...
3.Cold water is added to each of the following pairs of solid salts. In each case state whether a precipitate wil be present, and if so what its composition is. Note: The precipitate may be either one or both of the original salts or one or more of the products formed by reaction between the salts. (10 pts) a. Pb(C2H2O2)2 and NaCl b. BaSO4 and Cus c. Ni(NO3)2 and CaCl2 d. AgCl and Cu(NO3)2 e. Na2CO3 and MgCl2 4. In...
2. A solution that may contain Sn.Bi. Cu? and Cdions is treated with thioacetamide in an acidic medium. The black precipitate that forms is partly soluble in a strongly alkaline solution. The precipitate that remains is soluble in 6M HNO, and gives a blue solution when treated with excess NH Based on this information, which ions are present, which are absent, and which are still in doubt? Present Absent Snut Cu 2+ Bi 34 3. Explain how controlling the solution...
2. How are the Group I cations first precipitated from solution? 3. Write the net-ionic equation for the initial precipitation of any one Group I cation from your unknown solution. 4. Lead(II) chromate is used as a yellow pigment in paints. Write the net-ionic equation for its formation in this Experiment during the confirmatory test for lead(II). 5. When ammonia is added to a white precipitate of mercury(I) chloride, the precipitate turns grayish-black. Write the net-ionic equation for what happens,...
2. A solution that may contain Sn.Bi. Cu and Cd²+ ions is treated with thioacetamide in an acidic medium. The black precipitate that forms is partly soluble in a strongly alkaline solution. The precipitate that remains is soluble in 6M HNO, and gives a blue solution when treated with excess NH. Based on this information, which ions are present, which are absent, and which are still in doubt? 3. Explain how controlling the solution pH allows separation of Group II...
QUESTION 1 10 points Save Answer be Treatment of an unknown solution containing Group III cations with sodium hydroxide and hydrogn alpero xides produces a yellowish solution and a green precipitate. Which cations are most probaby presetn? Aluminum and Chromium aluminum and nickel Chromium and Nickel Iron and Chromium QUESTION 2 10 points Save Answer which of the following is added to the nickel (II)ion to form a blue complex ion? ammonia Dimethylglyoxime (DMG) KSCN NaOH QUESTION 3 10 points...
A deep blue Group III unknown formed a blue-green precipitate when treated with NH_3/NH_4 Cl. The mixture was centrifuged and separated. The precipitate dissolved in NaOH to form a green solution. The solution turned purple when treated with BiO_3 in acid solution. All other tests were negative. What ion(s) is/are present? What ion(s) is/are certainly absent? Write net ionic equations for all observations mentioned above, using the ions that you have determined to be present. One of the reactions will...
Water is added to a group chloride precipitate and heated. The precipitate seems unaffected by heating The supernatant is separated from the precipitate while hot and treated with K2CrO4 (aq) but no precipitate forms. The white precipitate remaining from the first step is treated with NH3 (aq) and turns a grey/black color. When the ammoniacal supernatant is acidified with nitric acid, a white precipitate forms Sort the statements from the paragraph above into bins indicating what information the statement provided...
I need help with questions 4 and 7 please
1 Cation Analysis Prelaboratory Questions DIXON No.2 HB 1. Ag, Hg2+, and Pb2+ belong to group I cations. What specific reaction do they all undergo? What is the distinctive observation for this reaction? The observation, that they will occur is that a white preciptate will form. They will react with dilluted HCl. 2. Describe the solubility of compounds AgCl, PbCl2, and HgCl, in a) room temperature water. AGCI PbCl₂ insluable HgzCl₂...
UNKNOWN SOLUTION Be sure to indicate solution (soln) or precipitate (ppt) Group 3 Reagent Cation(s) present Group Procedure reference G3-1 (ex: G1-6) Observations and net lonic equations If additional space is needed, reference the Group Procedure Black PPT Felt NH,ỰNH. Thioacetamide (TA), G3-2 6 M HCI Heat Fert G3-3 6 MNH, Once HCI coas added to ppt, puff of smoke came, ppt remained black colorless ppt , 10 drops to make soluty basic to litmus paper I once added to...
UNKNOWN NUMBER Indicate observed results in the appropriate square. If no precipate is observed, record an S for soluble. If a slight cloudiness is observed, record an SS for slightly soluble. If a precipitate is observed, record an I for insoluble Record the color and appearance of precipitate in cach case. Anion d | Br” | IP | Co” so OH S1- Cation Ae chory vedow Whichodr Mg Screar I burt Biun Dari Branta Iss- crestul anfte Iss. Crystal white...
Most questions answered within 3 hours.
-
The charge to the left in the figure above has a
magnitude of 2.90 nC, and...
asked 34 minutes ago -
Verify the MIRR is 9.29% given cash flows in years 1 and 2 of
$1,000 each,...
asked 1 hour ago -
Calculate the pH of a 5.7 M solution of aniline (C6H5NH2; Kb =
3.8 x 10^-10)
asked 3 hours ago -
LSL R3, R3, R12
Memory
Address
Orig.
Data
Updated
Data
Register
Orig.
Data
Updated
Data
0x84F0...
asked 3 hours ago -
Air at 100 kPa and density of 1.2 kg/m3 flows upward through a
5-cm diameter inclined...
asked 3 hours ago -
Define the following concepts in your own words: (a) stiffness,
(b) strength, (c) strain,
(d) ductility,...
asked 4 hours ago -
In C++
In this homework, you will be tasked with creating functions to
manipulate strings that...
asked 4 hours ago -
An isolated colony represents a pure culture. one rare occasions
, however , a colony can...
asked 5 hours ago -
*****DO NOT ANSWER THIS QUESTION IF YOU DON'T
KNOW*******Rights and Duties of Auditors; Minimum 4000
words...
asked 6 hours ago -
The probability that Janie is wearing sunglasses is 1/4. The
probability that she is wearing sunglasses...
asked 6 hours ago -
Do you believe social media is more of a help or a hindrance in
controlling crises...
asked 6 hours ago -
Two long, parallel wires separated by 2.85 cm carry currents in
opposite directions. The current in...
asked 6 hours ago