Assume that a reagent is added to a sample of ions and a precipitate formed. Describe the...
Assume that a reagent is added to a sample of ions and a precipitate formed. Describe the correct way to separate the mixture into two test tubes and how the precipitate should be washed.
Homework Answers
For example, consider the following reaction.
AgNO3(aq) + NaCl(aq) ----> AgCl(s) + NaNO3(aq)
The net ionic equation: Ag+(aq) + Cl-(aq) ----> AgCl(s)
The mixture can be separated into two test tubes just by filtration.
The precipitate can be washed just by distilled water.
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Assume that a reagent is added to a sample of ions and a
precipitate formed. Describe the...
A solution was known to contain both Ag1+ ions and Fe3+ ions? Which of the following could be added to separate them in...
A solution was known to contain both Ag1+ ions and Fe3+ ions? Which of the following could be added to separate them in such a way that one ion would end up in a precipitate, while the other remained in solution. Group of answer choices K2CrO4 HCl NH4OH H2O
QUESTIONS Answer the following questions in the data section of your lab report: 1. Use the...
QUESTIONS Answer the following questions in the data section of your lab report: 1. Use the experience you gained from doing the experiment to answer the following: A student tested an unknown mixture that might contain any of the ions tested in this ex- periment and made the following observations: a. On the addition of 6M HCI, the solution remained colorless and no bubbles were observed. b. When 0.1M BaCl2 was added to the acidified unknown, a white precipitate was...
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...
Prelab Questions 1. Briefly describe the hazards associated with each of the following chemicals and the...
Prelab Questions 1. Briefly describe the hazards associated with each of the following chemicals and the appropriate precautions to be taken. a. Ba(NO), b. 1 M HCl c. Pb(NO), d. KSCN 2. Discuss the difference between qualitative and quantitative analysis, Which type is utilized in this exercise? Postlab Questions A student studied some reactions involving P C and N ons. First, the student reacted the individual metal cations with 1 M HCl and 1 M NaOH solutions. The student then...
[24]Following questions are based on Experiment #17 "General ation unknown analysis The data and results provided...
[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...
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...
17.70 Describe how you could separate the following mixture of metal ions: Na+, Hg2+, and Ca2+.
17.70 Describe how you could separate the following mixture of metal ions: Na+, Hg2+, and Ca2+.
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....
how do you do this ? Some Calculations You started out with a known amount of...
how do you do this ?
Some Calculations You started out with a known amount of harium chloride and sodium sulfate. How much solid product should you collect? Show your calculations. How much did you collect? What is your percent yield? Which reactant should be the limiting reagent? Which reactant should be the excess reagent? Proving the identity of the Limiting and Excess Reagents There are two scenarios for the identity of the contents of the beaker containing the filtrate....
1. Write the chemical formulas for all the barium salts that can be formed in Part...
1. Write the chemical formulas for all the barium salts that can be formed in Part 1 Part 1A: Solubility of barium salts under neutral conditions 1. Using a clean disposable pipet, transfer 1 mL of Co-anion solution to a clean test tube and label the test as "Co?- neutral". Repeat this for the remaining anion solutions S0?-?,P03-?, NO3",C1-7,7- 'so that you will have six test tubes with six unique anion solutions. Use a different pipet for each anion solution,...
QUESTIONS Answer the following questions in the data section of your lab report: 1. Use the experience you gained from doing the experiment to answer the following: A student tested an unknown mixture that might contain any of the ions tested in this ex- periment and made the following observations: a. On the addition of 6M HCI, the solution remained colorless and no bubbles were observed. b. When 0.1M BaCl2 was added to the acidified unknown, a white precipitate was...
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...
Prelab Questions 1. Briefly describe the hazards associated with each of the following chemicals and the appropriate precautions to be taken. a. Ba(NO), b. 1 M HCl c. Pb(NO), d. KSCN 2. Discuss the difference between qualitative and quantitative analysis, Which type is utilized in this exercise? Postlab Questions A student studied some reactions involving P C and N ons. First, the student reacted the individual metal cations with 1 M HCl and 1 M NaOH solutions. The student then...
[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...
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...
17.70 Describe how you could separate the following mixture of metal ions: Na+, Hg2+, and Ca2+.
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....
how do you do this ?
Some Calculations You started out with a known amount of harium chloride and sodium sulfate. How much solid product should you collect? Show your calculations. How much did you collect? What is your percent yield? Which reactant should be the limiting reagent? Which reactant should be the excess reagent? Proving the identity of the Limiting and Excess Reagents There are two scenarios for the identity of the contents of the beaker containing the filtrate....
1. Write the chemical formulas for all the barium salts that can be formed in Part 1 Part 1A: Solubility of barium salts under neutral conditions 1. Using a clean disposable pipet, transfer 1 mL of Co-anion solution to a clean test tube and label the test as "Co?- neutral". Repeat this for the remaining anion solutions S0?-?,P03-?, NO3",C1-7,7- 'so that you will have six test tubes with six unique anion solutions. Use a different pipet for each anion solution,...
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