dutsen wutan lantarki

Daya daga cikin mafi ban mamaki sinadaran halayen shine tsarin bazuwar ammonium dichromate (VI) (NH4) 2Cr2O7, wanda aka sani da "tsuntsun dutsen sinadarai". A yayin da ake yin dauki, ana fitar da wani abu mai yawa na porous, wanda ya dace da kwaikwayon lava na volcanic. A farkon lokacin cinema, bazuwar (NH4) 2Cr2O7 an ma yi amfani da shi azaman "tasiri na musamman"! Ana buƙatar masu gwajin da ke son gudanar da gwajin kada su yi a gida (saboda sakin ƙurar tashi da za ta iya gurɓata ɗakin).

Don yin gwajin, za ku buƙaci crucible na anta (ko wani jirgin ruwa mai jure zafi) cike da ammonium (VI) dichromate (NH)₄)₂Cr₂O₇ (hoto na 1). Sanya ƙwanƙolin a saman tudun yashi wanda ke kwaikwayon mazugi mai aman wuta (Hoto 2) kuma kunna lemu foda tare da wasa (Hoto 3). Bayan wani lokaci, an fara aiwatar da saurin rushewa na fili, wanda zai haifar da sakin babban adadin kayayyakin gas, wanda ke watsar da chromium oxide (III) Cr.₂O₃ (hotuna 4, 5 da 6). Bayan ƙarshen amsawa, duk abin da ke kewaye an rufe shi da ƙurar kore mai duhu (hoto 7).

Za'a iya rubuta martanin bazuwar ammonium dichromate (VI) ta hanyar lissafin:

Canji shine amsawar redox (abin da ake kira redox reaction), lokacin da yanayin iskar oxygen da aka zaɓa na zarra ya canza. A cikin wannan halayen, wakili na oxidizing (wani abu da ke samun electrons kuma yana rage yanayin oxygenation) shine chromium (VI):

Wakilin ragewa (wani abu da ke ba da gudummawar electrons kuma, saboda haka, yana ƙara ƙimar oxidation) yana ɗauke da nitrogen a cikin ion ammonium (muna la'akari da ƙwayoyin nitrogen guda biyu saboda N.₂):

Tunda adadin electrons da aka ba da gudummawar da wakili mai ragewa dole ne ya zama daidai da adadin electrons da aka karɓa ta hanyar oxidizing wakili, muna ninka lissafin farko da 2 a bangarorin biyu kuma mu daidaita adadin sauran oxygen da atom ɗin hydrogen.