曼妥斯和可樂(lè)的反應(yīng)原理

曼妥斯和可樂(lè)的反應(yīng)原理YoudrinkCokeIt’scoolYoueatMentosIt’sfineBut!IfyoueatMentosafterdrinkingCoke……Whythishappens?Inordertoexplainthis,therearethreethingsweneedtoknow:TheingredientsofMentosTheingredientsofCokeHenry’slawTheingredientsofMentosThemainingredientsofMentosaresucrose,glucose,cornmeal,andgumarabic(formula:CH4O3S,mainingredientisarabicacid)TheingredientsofCokeThemainingredientsofCokearewater,sugar,carbonicacid,phosphoricacid,andcaffeine.Henry’slawAtaconstanttemperature,theamountofagivengasthatdissolvesinagiventypeandvolumeofliquidisdirectlyproportionaltothepartialpressureofthatgasinequilibriumwiththatliquid.在等溫等壓下，某種氣體在溶液中的溶解度與液面上該氣體的平衡壓力成正比。

Cokecontainsalotofcarbondioxide,inordertodissolvelargeamountsofCO2intoasmallbottleofliquid,CO2gaswillbecompressedbyhighpressure.AccordingtotheLeChatelier’sprinciple,whenpressureincreases,moreCO2willdissolveinwater.

TheprincipleofreactionTherefore,whenpressurebecomesveryhigh,largeamountsofCO2willdissolveinwatercompletelytoformasuper-saturatedsolution,thissolutionbecomesveryunstablewhenweopentheCokebottle.(AccordingtotheHenry’slaw,thepressureinthebottledecreaseswhenweopenit,itmeanstheamountofgasthatcandissolveinaliquidalsodecreases,therefore,someCO2gaswillescapefromtheliquid.)THeprincipleofreactionTheprincipleofreactionInterference:Becausetherearemanycoremealgrainsinmentos,thesurfaceofmentosisveryrough,soitcanfunctionasaperfectcatalyst.Inotherwords,ithasinterferencefunction.

Rememberthatthesolutionisatsupersaturatestateanditisextremelyunstable,ifainterferencepointoccursinthesolution,thebalancewillbebrokenandlotsofCO2gaswillcomeoutofthesolution.(H2CO3----H2O+CO2)Thesolutionwilleventuallyreachitsequ