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madi.stewardson
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year 12 Chemistry Mind Map on The Acidic Environment, created by madi.stewardson on 28/03/2016.

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madi.stewardson
Created by madi.stewardson almost 9 years ago
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The Acidic EnvironmentIndicatorsBromothymol blue (yellow)6.2-7.6(blue) -Methylorange (red)3.1-4.4(yellow) -phenolphthalein(colourless)8.3-10.0(pink)pH of oxidesnon-metaloxides- acidicmetal oxides-basicamphoteric- canbe both eg. H2OLe Chatelier’s Principlecounteractany change inequilbriumoxide productionsulfur oxidesnitrogen oxidesvolcanoes-burning offossil fuels - smeltingmetal oreslightning- vechiclesacid rainpH <5 - SO or NO in H2Oeffectskill aquatic ecosystem-leeches minerals neededfor plants -erodes buildingsacidsweakstrong1-99% ionised - CH3COOH(ethonoic acid - C6O7H8(citric acid)100% ionised -HCl - H2SO4pH = -log10[H+]%ionisation = [H+]divide [acid] x 100HistoryLavosier- acid oxygenDavy- replaceable hydrogenArrhenius- H+ and OH-Bronsted and Lowry-acid proton donor baseproton accepterConjugate acid/basemolecules related by the loss or gain of aproton eg. H20 (acid) and H30+(conjugate base(accepted))neutralisation reactionssalt based on stronger acid/base-strong+strong=neutral salt + H2OBufferweak acid andconjugate base eg.HCO3- and CO3 2-Titrationused in blood, minimises pH changereacting a solution of unknownconcentration with a standardmethodacids in food-flavour enhancers-preservative-anti-oxidantcarbon dioxidehigh pressure- CO2 gas dissolvestemperature - dissolving of gas is exothermicAcidity- acid would create more CO2 gasDouble click this nodeto edit the textClick and drag this buttonto create a new node