These have been provided as a MS-word. You will be directed to use a website to complete an online simulation of the qualitative analysis experiment. General Background to Qualitative Analysis Experiment Qualitative analysis is a method used for identification of ions or compounds in a sample.
In many cases, qualitative analysis will also involve the separation of ions or compounds in a mixture. Examples of qualitative tests would include ion precipitation reactions solubility tests or chemical reactivity tests. The separation of ions is easily achieved by taking advantage of their solubility properties. In a lab simulation, you will use selective precipitation, which takes advantage of the differing solubility of these ions in different conditions, to separate these ions from the mixture and then confirm their presence or absence using selective chemical reactions.
In the first part of the experiment you will use a qualitative analysis scheme with known solutions containing one or more of the group I cations to show how the ions behave and can be identified. Note that the separation procedure we will use in the online lab simulation is generally similar qualitative analysis of cations lab that described in this paper.
However, the details of the confirmations are different and are described in the online lab simulation documentation see below. Part C of these instructions contains information on how to use the online lab simulation. Part D of these instructions describes the experiments you should carry out. Part E contains instructions on postlab questions and how to submit your lab assignment. Instructions for Online Qualitative Analysis Simulation.
It was created by Prof.
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A new page will open that contains a description of the experiment procedures and a suggested experiment to use known solutions. It is a good idea to print this page if you can so that you can refer to it at any time. Watch the powerpoint presentation found in the lab assignment.
In this I will show quxlitative a run through of how the online QA lab simulation works.
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General: Make notes and observations as you perform procedures with the simulation. Use to clear sualitative simulation between experiments. Once you have this mixture, carry out the procedure described in the flow sheet see also powerpoint presentation to separate and confirm the presence of all three ions in this mixture. Make careful notes of what you do and note down what you observe at each step. This trial unknown contains http://rectoria.unal.edu.co/uploads/tx_felogin/children-at-home-and-abroad/vygotsky-learning.php or more the group I cations randomly selected by the simulation.
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Carry out the same procedure that you did before for a mixture of known group I cations Experiment 2. You can the land this analysis qualitative analysis of cations lab a trial unknown as many times as you like to practice. A new sample will be created each time you select a trial unknown. Instructions for this will be found in the main assignment instructions on Canvas. Make sure that you analyze the assigned unknown that I provide you.
If it does you are OK. Now you are ready to analyze your assigned unknown. Carry out the same procedure that you did for a mixture of known group I cations Experiment 2. Enter your name in the dialog box that opens and click OK. A new page opens with a summary of your answer.
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qualitative analysis of cations lab You can print this page from your web-browser. You joan curley need an electronic copy of this summary page for submission of your lab report. Postlab Questions and Submission of Lab Assignment: When you have completed the experiments in part D, including the assigned unknown, answer the postlab questions below.
You can either write your answers using your MS-word editor or equivalentin the relevant spaces below OR print this page, write your answers by hand, and take a picture of your answers to submit on Canvas. For a solution containing at least one of the three cations involved in this experiment, answer the following questions.
What cation s may be present in the solution?]