Question

[24]Following questions are based on Experiment #17 General ation unknown analysis The data and results provided pertain to a specific unknown analysis. Provide Answers to the following for this analysis 1 (a) To separate Qualitative Analytical (QA) Group I from the other groups tested in the general cation unknown you must add (b) The precipitate obtained in (a) above was centrifuged and the supernatant liquid decanted. The The warm test tube contained no precipitate. Based on this observation, provide the following: Group I ion(s) precipitate was washed, decanted, water was added to the precipitate and it was heated to boiling questionable: (c) After separating out QA Group I, the remaining QA groups will be found in;(circle your choice) warmed in step(b) in the supematant liquid in wash solution (d) To the sample of unknown solution from which QA Group I has been separated, the analyst added 6 M NaOH. No precipitate was obtained. 6) Does this mean that there are no Group III cations present? YES NO (i) Based on the steps carried out and the observations made provide the following Group III ion(s) present:a Gii) Explain why you grouped each ion, if any, under questionable. absent: (e) In a different analysis and analyst, QA Group IV precipitate is separated from QA Group V by centrifugation and decantation. What conditions are required and what reagent is used to separate QA Group IV from V? () What reagent(s) are required to dissolve the QA Group IV precipitates? Reagent(s); (g) Why did the QA Group IV precipitate(s) dissolve with the reagent used above? (For example, Agl would not dissolve with these reagents.) (h) After separation of QA Group IV by precipitation, Group V ions should be in the supernatant solution. (i) Why cant we test the solution portion for NH,? (ii) Briefly describe how we would test for NH
0 0
Add a comment Improve this question Transcribed image text
Request Professional Answer

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.

Request! (Login Required)


All students who have requested the answer will be notified once they are available.
Know the answer?
Add Answer to:
[24]Following questions are based on Experiment #17 "General ation unknown analysis The data and results provided...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
  • 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...

  • ANAL 364 The Chemisery and Qualiative Analysis of Cations Group Separaions and Separations of Group 1 Catioms 27 Po...

    ANAL 364 The Chemisery and Qualiative Analysis of Cations Group Separaions and Separations of Group 1 Catioms 27 Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. What are the properties of the Group I, I1, and I cations that permit their separation by groups? (2) The precipitate was separated from the supernatant liquid in (1) and was found to be insoluble in hot water. The precipitate turned grey-black upon addition of 6M NH,...

  • Group 1 Flowchart Use the following chemical facts to construct a flow chart for this lab:...

    Group 1 Flowchart Use the following chemical facts to construct a flow chart for this lab: 1 Group 1 cations are Ag, Hg, and Pb 2. AgH a and Pbare given to you in lab as their nitrates which are soluble in water (denoted by as) 3 AgHgand Pb are the only common ions that form a precipitate (denoted by with the Cl ion, presented as Hcl They all form white precipitates. 4. These Group 1 precipitates are separated from...

  • Why wouldnt a weak base, such as NH3, work just as well as KOH in (1)?...

    Why wouldnt a weak base, such as NH3, work just as well as KOH in (1)? 2.2 Is the question I have. I figured out 2.1 already. Below is relevant info. Thanks! 2. (1) Describe how adding a solution of KOH to the original sulfide precipitate results in the separa- tion of Sn4+ ion from the other Group W cations. (2) Why wouldn't a weak base, such as aque- ous NH3, work just as well as aqueous KOH in (1)?...

  • Anion analysis POSTLABORATORY ASSIGNMENT 1. An iodide/chloride/sulfate unknown solution gave a yellow precipitate with AgNO The...

    Anion analysis POSTLABORATORY ASSIGNMENT 1. An iodide/chloride/sulfate unknown solution gave a yellow precipitate with AgNO The supernate did not react with Ba(NO)). The yellow precipitate did not dissolve in NH, H,O. After centrifuging the supernate was acidified with HNO, and gave a white precipitate. State the ion(s) present in the unknown solution. An iodide/chloride/sulfate unknown solution plus AgNO, gave no reaction. The solution was treated with Ba(NOs)2 and produced a white precipitate. State the ion(s) present in the unknown solution....

  • 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...

  • 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...

  • 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...

  • 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...

  • Pre-Lab for Qualitative Analysis of Silver Group I Cations Lab 1. What are the ions that...

    Pre-Lab for Qualitative Analysis of Silver Group I Cations Lab 1. What are the ions that are considered Group I cations? 2. Based on the Activities Series of Elements, explain why Group I ions would form precipitates when a strong, concentrated acid (such as HCI) is added to them. 3. Pby, and K Cro, will react with each other to form a precipitate if the concentrations are high enough. Write the complete, balanced equation for the reaction of Pbs and...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
Active Questions
ADVERTISEMENT