Ch 223 Lab Qualitative Analysis Homepage Group I Cations Part b: analysis and identification of group i cations in an unknown sample. obtain a test tube which contains a mixture of group i cations. record the id code of the sample on your report form. pour 1.0 ml of the above mixture into a second small test tube and then add 2 drops of 6 m hcl to this test tube. Experiment 12: qualitative analysis of cations pre laboratory assignment the pre lab assignment for part a of the experiment is to complete the flow chart and answer the question on page 10 of this document. there is no pre lab assignment for part b. objective: to separate different cations in aqueous mixtures using selective.
18 9 Qualitative Cation Analysis Chemistry Libretexts None of the cations in this group form precipitates in the separation processes of group 1~4 cations and thus remain in the final solution. the flow chart 1 shows the separation of these cations into 5 groups. students will practice systematic analysis of group 1 (flow chart 2) in the followings. ii. systematic separation of group 1 cations. 2 ntu experiment 6 qualitative analysis of cation group 2 flow chart: separation and identification of cation group 2 a´ym;ljf 2 1 fhr "ýbp<p? s!o s > = 8«ou step 2 2 rinse ppt with 1 d 6 m nh 4 cl and 20 d water, cfg. add 10 d 0.5 m koh to ppt, mix well. heat in boiling water bath ( 5 min), cfg. The unknown portion of the experiment will count heavily in determining your grade so take your time and be careful. take 20 drops of the unknown solution in a clean medium test tube and dilute the solution using 5 ml deionized water. add 10 15 drops of 6.0 m hcl. Experiment 28: qualitative analysis of cations (this experiment was adapted from colby college, experiment 4.) purpose the purpose of this experiment is to develop and use an chemical test analysis scheme (flow chart) for the identification of cations. background (this is a fictional story.).
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