scan0006 - Name 3 flaws Section 0-753 Date EXPERIMENT 1...

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Unformatted text preview: Name: 3% flaws Section: 0-753 Date: EXPERIMENT 1. Flame Tests for Zn“, Cu2+, and Ag”. Do flame tests on solutions which contain these ions. Report your results in the following table. Solution Tested Color Time Zing fling, gram (shag 2) 3 glaze" H nlzfaiik arm; 5%:wa 4" . fifilflfif Milk—Potts W .--— Q 6.1 Does it appear that Zn“, Cu”, oi" Ag+ is detectable by flame test analysis? Tell why or why not. Zna+auija+ MM W31?“ #9.»:— m‘ 2. B/L Acidity of Zn(OH2)62+, Cu(OI-Iz)52+, and Ag(OH2)2+. Use indicators to assess the pH (to one SF.) of solutions of Zr1(OH2)62+ and Ag(0l12)2+. Use pHydrion paper (m 1— 2 cm strip) to assess the pH (one SF.) of a solution of Cu(OH2)62+. (Since Cu(OH2)62+ is colored, innsolution indicator testing is not reliable for pH estimation.) Report your results in the following table. NOTE: Use pHydrion paper for pH assessment only if the solution to be tested is colored. Solution Tested Ion Tested Results (Indicator(s)lColor(s)lpH) 2V! (6H2)fiz 1- Zia-VH- Brawn/bowl b], 5’9 “M more; At; pupae" paring/gog- ' alarm/u 4316014214— &&+ [5W 5! [@5Eti (44:25:51 Q 6.2 For each of the above, write the equation for the principal equilibrium which shows why [H3O+] is different from [H30+ } for deionized water. Zn {We}? + Hap 62> Znéieat 56095? t :9 Cu may + Hag g: caCowals (a HY 6* ”3° -" OK -—> Asfi’é‘lebak * [4°10 ‘*" Asétiébatbm +He°+ 6-7 ...
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