Question

Now let us work on the left-hand branch of the flow chart containing the supernatant with the remaining four catto Cr. zn.NP, Mg(note, the presence of Nat should have already been flame tested, its presence here will not interfere with subsequent tests on the remaining ions.) We should keep in mind that our unknown could contain any number of these ions and thus we will need a procedure (flow chart) that can help us separate and identify each one. Let's get cracking. Go to Explore Reactions and prepare nitrate solutions of these four ions one at a time. To each solution, add sodium hydroxide (complete Table 1). Then, fill out Table 2 by adding excess sodium hydroxide to each solid/solution mix generated from the reaction products of Table 1, and fill out Table 3 with the addition of excess ammonia to each solid/solution mix generated from adding sodium hydroxide (That is, you will have to redo Table 1 and then add excess ammonia). Be sure to record your results and observations in each case. Table 1. Addition of NaOH - Computer Simulation Cation Net lonic Reaction Precipitation Color Mg? Yes/White Mg2+ + 2OH → Mg(OH)2 Ni? Yes/Green Cr3+ Zn2+
Fill out the chart please.

Answer 1

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Cation Mg2t Ni2+ 3+ nみ Precipitation /colors yes White Yes/ green yes/ green yes/White veel yes Nerionie Reaction mg2t+ 204" 7 mg (OH)2 Ni2+ + 204 - NICOH)2 c8 3t+ 304- ex (OH)3 Zn2+ + 204 20 (OH)2 1