![CHEMISTRY 1112 The Plan of Cation Analysis 6. Will CdS precipitate from a 0.001M solution of Cd if [S] - 1 x 10- 7. What colo](http://img.homeworklib.com/questions/2a362940-70a9-11ea-983b-9b6c5e2d6126.png?x-oss-process=image/resize,w_560)
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![0 ksp value for cds = .8X102 cas - Cast + s - 8x 10-27 = (0 0 0) (1 s² ES 2 -] = 8x10-27 oool [52] = 8x1024 The requirement a](http://img.homeworklib.com/questions/2acc1490-70a9-11ea-b108-7116baf37cb3.png?x-oss-process=image/resize,w_560)
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CHEMISTRY 1112 The Plan of Cation Analysis 6. Will CdS precipitate from a 0.001M solution of...
question 11 please 9. In testing the acidity of a sample, why must the stirring rod not why must the stirring rod n...
question 11 please
9. In testing the acidity of a sample, why must the stirring rod not why must the stirring rod not touch the sides of the 10. In operating a centrifuge, why is a test tube with water placed opposite the sample contain 11. Describe how the following operations can be done in semimicro qualitative analysis. a. Mixing two reagents
CHEMISTRY 1112 The Plan of Cation Analysis 3. Calculate the pH of a 0.015M solution of...
CHEMISTRY 1112 The Plan of Cation Analysis 3. Calculate the pH of a 0.015M solution of HL 4. Predict whether aqueous solutions of the following salts will be acidic, basic, or neutral + KCN d. Na,co, b. AICI, c. Cuci, c. NaNO 5. Write the solubility product expression and look up the value for kap for each of the following salts (use textbook or CRC handbook) 1. AgCI b. Ca(OH) c. Ca,(PO), d. BaCO, e. Al(OH),
CHEMISTRY 1112 The Plan of Cation Analysis b. Separating a solid from a liquid 12. Why...
CHEMISTRY 1112 The Plan of Cation Analysis b. Separating a solid from a liquid 12. Why should you NEVER place a dropper (even a presumed brand new, never been used dropper) directly into a reagent bottle? 13. The unknown summary in your lab notebook should consist of what six basic parts? 14. What are the common names and group reagents for each group a. 1 b. II c. III d. lv e. V
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample...
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample should be identified first if it is indeed in the sample? 2. In what phase is the first cation supposed to be identified, in solid or liquid phase? And in what color? 3. According to the experimental procedure written above which cation in your sample should be identified second if it is indeed in the sample? 4. In what phase is the second cation...
Question: Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should...
Question:
Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should be performed concurrently on the known and the unknown solutions. Volumes are approximate. All work excepting the centrifugation should be done in the fume hood 1. To about 2. mL of your sample in a test tube, add 5 drops (-0.2 mL) of 6 M HCl(a). Mix well and centrifuge. Decant the clear liquid into a clean test tube and save it for Step...
2. The instructions for Solution IV describe the preparation of a buffer solution. a. Calculate t...
post lab questions?
2. The instructions for Solution IV describe the preparation of a buffer solution. a. Calculate the pH of this buffer solution if it has an equal concentration of NHs and NH4 b. Does this solution buffer in the acidic, basic, or nearly neutral pH range? Explain. c. Explain why it is necessary to provide a buffer solution at this point in the procedure. Solution IV Add 2 drops NH.CI solution and check the pH of the solution...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name of any) Lab Section MWITH THE Advance Study Assignment 1. The reagent (chemical substance used) to precipitate the all the cations of Group _(symbol and molarity 2. Why do we add an additional drop of the precipitating to the Group I precipitate formed? 3. When we centrifuge why must we use a blank test tube (containing an equal volume of water) on the opposite...
I need help with the prelab and the flowchart. I’m totally clueless on the flowchart. For...
I need help with the prelab and the flowchart. I’m totally
clueless on the flowchart.
For the prelab questions I have some answers but I don’t know
if they’re right. If they’re wrong, I would greatly appreciate an
explanation for the correct answer. I’m really trying to learn the
material but it’s hard now that classes are cancelled so I’m sorry
if these are dumb
1. PbCl ?
2. Ag+
3. ?
4. S1
Group 1, the Chloride Group BACKGROUND...
I need help figuring out the flowchart and if I have the right answers for the...
I need help figuring out the flowchart and if I have the right
answers for the prelab please and thank you!
Group I, the Chloride Group BACKGROUND The precipitating reagent for the chloride group is chloride ion in an acidic solution. Only three of the 18 metal ions form a precipitate with this reagent: silver ion (Ag'), mercury(I)ion (Hg). and lead ion (Pb). Since lead chloride is somewhat soluble, it is not completely precipitated here, and a low concentration of...
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...
question 11 please
9. In testing the acidity of a sample, why must the stirring rod not why must the stirring rod not touch the sides of the 10. In operating a centrifuge, why is a test tube with water placed opposite the sample contain 11. Describe how the following operations can be done in semimicro qualitative analysis. a. Mixing two reagents
CHEMISTRY 1112 The Plan of Cation Analysis 3. Calculate the pH of a 0.015M solution of HL 4. Predict whether aqueous solutions of the following salts will be acidic, basic, or neutral + KCN d. Na,co, b. AICI, c. Cuci, c. NaNO 5. Write the solubility product expression and look up the value for kap for each of the following salts (use textbook or CRC handbook) 1. AgCI b. Ca(OH) c. Ca,(PO), d. BaCO, e. Al(OH),
CHEMISTRY 1112 The Plan of Cation Analysis b. Separating a solid from a liquid 12. Why should you NEVER place a dropper (even a presumed brand new, never been used dropper) directly into a reagent bottle? 13. The unknown summary in your lab notebook should consist of what six basic parts? 14. What are the common names and group reagents for each group a. 1 b. II c. III d. lv e. V
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample should be identified first if it is indeed in the sample? 2. In what phase is the first cation supposed to be identified, in solid or liquid phase? And in what color? 3. According to the experimental procedure written above which cation in your sample should be identified second if it is indeed in the sample? 4. In what phase is the second cation...
Question:
Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should be performed concurrently on the known and the unknown solutions. Volumes are approximate. All work excepting the centrifugation should be done in the fume hood 1. To about 2. mL of your sample in a test tube, add 5 drops (-0.2 mL) of 6 M HCl(a). Mix well and centrifuge. Decant the clear liquid into a clean test tube and save it for Step...
post lab questions?
2. The instructions for Solution IV describe the preparation of a buffer solution. a. Calculate the pH of this buffer solution if it has an equal concentration of NHs and NH4 b. Does this solution buffer in the acidic, basic, or nearly neutral pH range? Explain. c. Explain why it is necessary to provide a buffer solution at this point in the procedure. Solution IV Add 2 drops NH.CI solution and check the pH of the solution...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name of any) Lab Section MWITH THE Advance Study Assignment 1. The reagent (chemical substance used) to precipitate the all the cations of Group _(symbol and molarity 2. Why do we add an additional drop of the precipitating to the Group I precipitate formed? 3. When we centrifuge why must we use a blank test tube (containing an equal volume of water) on the opposite...
I need help with the prelab and the flowchart. I’m totally
clueless on the flowchart.
For the prelab questions I have some answers but I don’t know
if they’re right. If they’re wrong, I would greatly appreciate an
explanation for the correct answer. I’m really trying to learn the
material but it’s hard now that classes are cancelled so I’m sorry
if these are dumb
1. PbCl ?
2. Ag+
3. ?
4. S1
Group 1, the Chloride Group BACKGROUND...
I need help figuring out the flowchart and if I have the right
answers for the prelab please and thank you!
Group I, the Chloride Group BACKGROUND The precipitating reagent for the chloride group is chloride ion in an acidic solution. Only three of the 18 metal ions form a precipitate with this reagent: silver ion (Ag'), mercury(I)ion (Hg). and lead ion (Pb). Since lead chloride is somewhat soluble, it is not completely precipitated here, and a low concentration of...
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...
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