(Q5359401)

English

elephant toothpaste

substance caused by the rapid decomposition of hydrogen peroxide using potassium iodide or yeast and warm water as a catalyst

elephant's toothpaste
marshmallow experiment
Old Foamy
catalytic decomposition of hydrogen peroxide

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experiment

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image

Elephant Toothpaste Denver JDS Labs.jpg
3,096 × 2,474; 3.63 MB

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video

14. Слоновска паста за заби.webm
29 s, 1,920 × 1,080; 18.56 MB

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Elephant (1).ogv
29 s, 152 × 270; 884 KB

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defining formula

{\begin{array}{llllll}\mathrm {H_{2}O_{2}} &+\ \mathrm {I^{-}} &\mathrm {\to H_{2}O} &+\ \mathrm {IO-} \\\mathrm {H_{2}O_{2}} &+\ \mathrm {IO^{-}} &\mathrm {\to H_{2}O} &+\ \mathrm {O_{2}\uparrow } &+\ \mathrm {I-} \\\hline \mathrm {2H_{2}O_{2}} &&\mathrm {\to 2H_{2}O} &+\ \mathrm {O2\uparrow } &&\Delta _{\mathrm {r} }H^{\circ }=-196{\text{ kJ/mol}}\end{array}}

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maintained by WikiProject

WikiProject Mathematics

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300 gram per kilogram

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Elephant toothpaste

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imported from Wikimedia project

English Wikipedia

Identifiers

Freebase ID

/m/0b77xhz

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Wikipedia(12 entries)

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cswikibooks Chemické pokusy/Sloní zubní pasta

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commonswiki Category:Elephant toothpaste