Paper
Qualitative Analysis of
Cations
Introduction:
The purpose of this experiment is to demonstrate the separation and identification of metal ions based on the insolubility of certain salts. The solubility rules should be taken into account. If a solution dissolves in water, the result contains both cations and anions. Analyzing different ions to discover their nature is the main goal of this experiment. Separation of the cations by testing the differences in solubility of different metal salts is done. Also, identification of the metal ions is done by the flame test procedure and by the characteristic reaction procedure. Both of the separation and identification methods will be used. Separation procedure will be done by the methods of decanting or centrifuging.
Procedure:
Equipment-
10ml.Graduated cylinder
3 test tubes
Bunsen burner
Nicrome wire
Beaker
Evaporation dish
Blue cobalt glass.
Chemicals-
6M HCL
0.1M K2CrO4
1M HCL
1M NaOH
0.1M Na2CO3
0.1MNH4SCN
0.1K4[Fe(CN)6]
KSCN
DMG
Hazards-
HCl is currosive & toxic. It can cause burns
DMG, K4[Fe(CN)6, are irritants
Most of the solutions are poisonous and all should be treated as if they are.
A. Preparation
1.Obtain 6ml of the unknown solution. In a graduated cylinder.
2.Number each test tube.
3.Add 5 drops of the unknown solution into each of the test tubes.
B. Forming a Precipitate
1.Add approximately 3 drops of Na2CO3 solution to the solution in test tube one.
Thoroughly mix. If the solution turns into a white precipitate then it includes ions
from set 2. Record the result.
Waste Disposal- there should be waste bottles under the fume hood. Dispose of
solution in a labeled Na2CO3 mixture waste bottle.
2.In test tube two add 5 drops of 1M HCL to the unknown solution. Thoroughly mix.
If the solution turns to a white precipitate, it has ions from set 1 . If it turns to a yellowish/red precipitate, it has ions from set 2. Record the results.
Waste Disposal- discard in a labeled HCL mixture waste bottle.
3. In test tube three add approximately 3 drops of 1M NaOH. If the solution turns to a brown precipitate it has ions from set 1, if the solution has a white precipitate it has ions from set 2, if the solution has a blue,green, or red precipitate it has ions from set 3. Record Observations.
Waste Disposal - discard in a NaOH labeled mixture waste bottle.
C. Separation of Ions
1.To separate the ions decanting, should be used or a beral pipet.
2.The ions should be separated completely.
Waste disposal- place the remaining liquid in the appropriate labled waste container.
D. Chemical Test
1.If a precipitate forms proceed with the following steps.
2.In each test tube with a precipitate add 4-5 drops of K4[Fe(CN)6]. If the solution turns white it has Ag ion, if the solution turns yellow it has Ba & Ca ions, if the solution turns blue it has Fe ions, if the solution turns red it has Cu or Co ions. Record the result.
3.In the test tubes without reactions add 4-5 drops of K2CrO4 (keep in fume hood). If the solution turns red it has the Ag ion, & if the solution turns yellow it has the Pb ion.
4.Record the result.
5.Next add 4-5 drops of DMG to the solution without reactions. If the solution turns bright red then it has the Ca ion, if the solution turns pink it has the Ni ion. Record the result.
D. Flame Test
1.Dip the Nichrome wire into 6M HCL shake it around, not too vigorously, and rinse with distilled water.
2.Make a suitable flame with the bunsen burner. Dip the wire in the test tube with no reaction in the unknown solution.
3.Swipe it through the flame and use a Blue Cobalt glass to view the color. If the color is blue it has the Pb ion, if the color is green it has the Ba ion, if the color is yellowish/red, it has the Ca ion , if the color is bluish green then it has the Cu ion, if the color is red violet it has the Li ion, if the color is purple red it has the K ion. Record the observations.
4.Dip the wire in the 6M of HCL again when cool & rinse with distilled water.
Waste Disposal- the remainding solution should be placed in the appropriate containers.
Conclusion
The unknown solution is contains .
34d
Другие работы по теме:
Dsl Vs Cable Essay Research Paper 22
Dsl Vs. Cable Essay, Research Paper 2.2 Why focus on Internet access? Internet access has several desirable properties as an application to consider for exercising residential infrastructure. Internet technology is
Apa Crit Essay Research Paper APA Critical
Apa Crit Essay, Research Paper APA Critical Analysis: Teaching Students How to Learn Vol. 31, No. 6, June 2000 In ?Teaching Students How to Learn? it showed the correlation between high-achieving students and their self monitoring in classes. The article goes on to say that unlike high school, college students do not have the regulation in their classes.
Cheers A Semiotic Analysis By Berger Essay
, Research Paper Cheers : A Semiotic Analysis by Berger In Arthur Asa Berger s essay, he conducts a semiotic analysis of the comedy television show Cheers. In his analysis of the show he points out many characteristics that refer to semiotics. Even though one could not agree with all of his findings, many of them are reasonable.
Waterford Crystal A Case Analysis Essay Research
111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
Kive Essay Research Paper
# a b c d e f g h i j k l m n o p q r s t u v w x y Grapes of Wrath, The – Book Summary and Analysis Grapes of Wrath, The – Book Analysis Grapes of Wrath, The – Joads’ Journey Great Expectations – Powerful Themes in the Novel
Technology Factor Analysis Essay Research Paper The
Technology Factor Analysis Essay, Research Paper The main function of my project is to provide a means by which I can measure progress.? It will therefore have to provide resistance when it is used, and have an indicator,
Long Term Analysis Essay Research Paper Analysis
Long Term Analysis Essay, Research Paper Analysis by a Long Term Creditor The interest a long term creditor is currently receiving is 5.6%. A long term creditor could receive as much as 22.7% working somewhere else in the same industry. So, currently the industrial average is giving 17.1% more interest than workingat Cameco Corporation, which is quite a big difference.
Qualitative Approaches In Mass Media Research Essay
, Research Paper The qualitative approach to research largely came about as a result of disillusionment with the more scientific and numerically based quantitative approach, and basically sought “to describe and analyse the culture and behaviour of humans from the point of view of those being studied”.
Qualitative Analysis Of Group Iv Ions Essay
, Research Paper Qualitative Analysis of Group IV Ions The composition of my unknown #J10 is Barium, Calcium, and Sodium. Confirmation of Ba2+: After I added .5 mL of 6M acetic acid to the precipitate from step
Bonding And Elements Essay Research Paper Element
Bonding And Elements Essay, Research Paper Element ? a substance which cannot be broken down into two or more substances by any means. Only contains one type of atom. Compound ? a substance in which atoms of two or
Physics Lab Essay Research Paper III ResultsAnalysisMy
Physics Lab Essay, Research Paper III. Results/Analysis: My lab partner and I worked diligently in this experiment to be as accurate and as precise in our measurements and calculations with the technology provided. In part one of the experiment, we calculated the amount of force on the planet at the closest distance to be approximately 18 F.
Marketing Strategies Essay Research Paper PRIMARY AND
Marketing Strategies Essay, Research Paper PRIMARY AND SECONDARY MARKETING RESEARCH How Can My Organization Benefit Abstract When conducting market research some questions are not adequately answered by secondary data, the market researcher must collect primary data. The success of a survey hinges most significantly on the willingness of respondents to provide the desired information.
Antony Speech Analysis Essay Research Paper Emotional
Antony Speech Analysis Essay, Research Paper Emotional Speech Analysis William Shakespeare?s ?Julius Caesar? is a well-written stage play. Shakespeare included many good speeches in his plays; one of the best was the one delivered by Antony. Antony?s speech came very shortly after Julius Caesar?s death, and the city was in much chaos.
Antony Analysis Essay Research Paper Antony Analysis
Antony Analysis Essay, Research Paper Antony Analysis Short Essay The beauty of William Shakespeare s writing does not lie in his actual writing, but the themes in which his plays suggest. Almost all of his plays can be connected to a higher theme, one that most people can relate. In the play, Antony and Cleopatra, the theme of manipulation runs ramped.
The Old Man And The Sea An
Analysis Essay, Research Paper The Old Man and The Sea: An Analysis I read this book for the first time in high school and I remembered it just as well as if I had read it yesterday. As I read it again I remembered some of the
Special Relativity Essay Research Paper ESPECIALLY 2
Special Relativity Essay, Research Paper ESPECIALLY … … of Hardy’s Poems as Seen through the characters” is a study concerning Hardy’s capability of presenting irony of situation in his poetry. The analysis deals …
Vision Essay Research Paper Literary analysis Vision
Vision Essay, Research Paper Literary analysis: Vision Out of the Corner of One Eye. The main character of “Vision out of the Corner of One Eye “, a short story by Luisa Valezuela, goes through a complete one hundred-eighty degree change over the course of the story.
Athlete Dying Young Essay Research Paper The
Athlete Dying Young Essay, Research Paper The Critical Analysis & Summarization of "To An Athlete Dying Young", by A.E Housman This poem is telling the reader that you can not
Antigone Essay Research Paper Analysis on the
Antigone Essay, Research Paper Analysis on the conflict men v. women found in Antigone Many conflicts can be found within various plays. In Sophocles’ Antigone one of the many conflicts found is men versus women. The king of Thebes, Creon, has a problem with women. But not only the king, Ismene, Antigone’s sister as well refers to herself and her sister as being inferior to men.
Immigration 3 Essay Research Paper Analysis of
Immigration 3 Essay, Research Paper Analysis of a Disagreement over Immigration The authors of the 3 articles on immigration reform all seem to agree that the 1990 immigration law is inadequate, but they agree on little else. They find different impacts on the workforce, positive and negative. And they differ sharply over whether recent levels of immigration help or hurt the economy: one writer suggesting higher levels of immigrants and the other two suggesting a reduced level.
Othello Act 5 Analysis Essay Research Paper 2
Othello: Act 5 Analysis Essay, Research Paper Othello: Act 5 Analysis Iago’s intelligence causes the self destruction of Othello. He appears to be the most intelligent person in the play, Othello, by the way he acts and
Arrest Analysis Essay Research Paper Arrest
Arrest Analysis Essay, Research Paper Arrest: – An arrest is the act of depriving an individual of his liberty by legal authority. This is to inform you the two procedures of arrest. The procedures of arrest are warrant and non-warrant.
Soil Analysis Report Essay Research Paper Soil
Soil Analysis Report Essay, Research Paper Soil Analysis Within the next few paragraphs, I will tell you all about the soil sample I collected and did tests on. I got some soil from out of one of my mom’s gardens. This one had a lot of flowers from Florida. This is a summary of what all I did to work on finding everything about my soil.
An Analysis Of From Silence To Words
Essay, Research Paper An Analysis of From Silence to Words: Writing as Struggle Through this essay, Min-zhan Lu depicts the struggles she faced growing up in China while speaking English. I feel the paragraph that best exemplifies this struggle is one found on page 239. In this one paragraph, Lu expresses her fear of losing command over the two languages that she speaks, English and Chinese.
Mr Essay Research Paper An investigation into
Mr Essay, Research Paper An investigation into Hotel Users expectations of The Best Hotel Chain 1. Aims and Objectives 1. To examine what the expectations of hotel users are of The Best Hotel Chain.
A Critical Analysis Essay Research Paper A
A Critical Analysis Essay, Research Paper A Critical Analysis of Evelyn Waugh’s “Bella Fleace Gave a Party” In the introduction to “Bella Fleace Gave a Party”, extensive background is revealed to help the reader understand the times in which the character lived. It is a time of enormous change in the political and social structure of these people’s lives.
Robert Bunsen Essay Research Paper Robert Wilhelm
Robert Bunsen Essay, Research Paper Robert Wilhelm Bunsen s name was famous for a a few discoveries in the field of chemistry. For example you might recognize Bunsen from the lab device, the Bunsen Burner . He also helped invent the spectroscope and discovered spectrum analysis. And at the beginning of his career, he discovered that iron oxide is an antidote for arsenic.
Untitled Essay Research Paper Analytical Chemistry
Untitled Essay, Research Paper Analytical Chemistry Analytical Chemistry is the branch of chemistry principally concerned with determining the chemical composition of materials, which may be solids, liquids,
How To Writing A Research Essay Essay
, Research Paper How To Writing A Research Essay The toughest part of the essay, for me, was taking all the information I had gained and reduce it to a mere few pages essay. After all, quality is better