{"id":2833,"date":"2025-05-29T12:54:04","date_gmt":"2025-05-29T17:54:04","guid":{"rendered":"http:\/\/jimlund.org\/blog\/?page_id=2833"},"modified":"2025-08-24T19:52:35","modified_gmt":"2025-08-25T00:52:35","slug":"chemistry-experiments-at-home","status":"publish","type":"page","link":"http:\/\/jimlund.org\/blog\/?page_id=2833","title":{"rendered":"Chemistry experiments at home"},"content":{"rendered":"\n

Supply sources<\/strong><\/p>\n\n\n\n

alkaline batteries — Zn metal (case), MnO2, [NH4<\/sub>]Cl, carbon rod
HSO4 –auto parts stores<\/p>\n\n\n\n

<\/p>\n\n\n\n

Experiments<\/strong>
1. Burn Mg metal.
2. Electrolysis of H2O -> H2 + O2
3. Different color flames (NaCl, )<\/p>\n\n\n\n

4. Extract Bismuth Metal from Pepto-Bismol Tablets.
30g pepto-bismo (bismuth subsalicylate) + 260 ml 32% HCl in 1.3 L H2O -> salicylic acid + bismuth chloride -> filter -> bismuth chloride + Al foil -> bismuth (black powder) -> heat in inert atmosphere -> Bi metal
5. Li metal from Li battery -> burn.<\/p>\n\n\n\n

6. DNA from strawberries

7. pennies + HCl -> Zn dissolves, laving shell of Cu<\/p>\n\n\n\n

8. Thermite: Fe2<\/sub>O3<\/sub> + 2 Al \u2192 2 Fe + Al2<\/sub>O3<\/sub><\/p>\n\n\n\n

9. Red cabbage pH indicator. Boil red cabbage ~10 min, collect purple juice. Filter through a paper towel. The purple color is due to anthocyanins. These anthocyanins can either accept a proton or donate one, and the three states are three different colors, link<\/a>, link2<\/a>. Add test items (colorless or weakly color things work best), and observe. Used: lime juice, hot sauce, coffee, H2O, baking soda, ammonia. <\/p>\n\n\n\n

10. Silver nitrate copper tree. Silver nitrate solution, 0.1 M. Suspend copper wire in solution, leave ~10-30 min.
Cu + 2AgNO3 -> 2Ag + Cu(NO3)2.<\/p>\n\n\n\n

11. Silver nitrate halide precipitation reactions. Silver nitrate solution, 0.05 M, Potassium chloride solution, 0.1 M, Potassium iodide solution, 0.1 M, about 1 ml of each. link<\/a>.
AgNO3 + KCl -> AgCl(s) + KNO3
Ag+<\/sup>(aq)  +  Cl–<\/sup>(aq)    AgCl(s)<\/p>\n\n\n\n

11. Silver nitrate mirror reaction.<\/p>\n\n\n\n

Silver nitrate solution, 0.05 M, NaOH 0.0125 M, am\u00admo\u00adnia so\u00adlu\u00adtion 5% – 10%. Glucose.
Mix the so\u00adlu\u00adtion of sil\u00adver ni\u00adtrate and a few milliliters of sodi\u00adum hy\u00addrox\u00adide. A brown sed\u00adi\u00adment of sil\u00adver ox\u00adide forms (2 AgOH \u2192 Ag2<\/sub>O + H2<\/sub>O). Then add the am\u00admo\u00adnia un\u00adtil the sed\u00adi\u00adment dis\u00adsolves com\u00adplete\u00adly. Avoid excess am\u00admo\u00adnia, it can af\u00adfect the qual\u00adi\u00adty off the cov\u00ader\u00ading and the speed at which the sil\u00adver set\u00adtles. This makes Tollens’ reagent, link<\/a>. Add glu\u00adcose so\u00adlu\u00adtion and pour on surface.
\u041d\u041e\u0421\u041d\u2082(\u0421\u041d\u041e\u041d)\u2084H\u0421=O (glu\u00adcose) + 2[Ag(NH\u2083)\u2082]OH -> \u041d\u041e\u0421\u041d\u2082(CH\u041e\u041d)\u2084\u0421\u041e\u041eH + 2Ag +4NH\u2083 + 2H\u2082O
Better adhesion after stannous chloride rinse.
Link<\/a>, link2<\/a>.
Aldehyde reaction:
\"{\\displaystyle
In a positive test, the diamine silver(I) complex oxidizes the aldehyde to a carboxylate ion and in the process is reduced to elemental silver and aqueous ammonia.<\/p>\n\n\n\n

Sensitize glass: Stannous chloride 10 g, 20 ml of HCl (0.25 M HCl) in 1 L.<\/p>\n\n\n\n

Dissolve 0.45 g AgNO3 in 50 ml H2O. Add 12.5 ml ammonia, then 2.3 ml of 10 N NaOH. Then add ammonia until brown precipitate re-dissolves. Then add 3 g glucose, apply to glass.<\/p>\n\n\n\n

12. Sodium polyacrylate, super-absorbent polymer.
Take 30 grams of sodium polyacrylate. Stir in 400 mL of distilled water.<\/p>\n","protected":false},"excerpt":{"rendered":"

Supply sources alkaline batteries — Zn metal (case), MnO2, [NH4]Cl, carbon rodHSO4 –auto parts stores Experiments1. Burn Mg metal.2. Electrolysis of H2O -> H2 + O23. Different color flames (NaCl, ) 4. Extract Bismuth Metal from Pepto-Bismol Tablets. 30g pepto-bismo (bismuth subsalicylate) + 260 ml 32% HCl in 1.3 L H2O -> salicylic acid + […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2833","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/2833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2833"}],"version-history":[{"count":13,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/2833\/revisions"}],"predecessor-version":[{"id":2946,"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/2833\/revisions\/2946"}],"wp:attachment":[{"href":"http:\/\/jimlund.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}