pH range vs. color change for acid and base indicators - together with pKa and structures of the indicators.
Common bases: NaOH, Nh3 (include OH-) A1 Ph definition:0(strong acid) -> 7(neutral, H2O) -> 14(strong base) Indicators:Methyl Orange (red-yellow) Phenolphthalein(colorless-pink) Litmus(red-blue) ph(X)=6, ph(Y)=3: The hydrogen ion concentration of acid Y is 10^(6-3)=1000 times...
strongbasesacceptprotonseasilyandweakbasesdonot. Anacidmaycontainoneormoreprotonsorionizablehydrogenatoms(H + )permolecule.Theequivalentmassor normalityofanacidisthemassthatprovidesonemoleofhydrogenions.Theequivalentmasscanbecalculatedby dividingthemolecularmassofanacidbythenumberofhydrogens.Someexamplesarelistedbel...
solutions,andtheacidsthatcanionizemultiplehydrogenions arepolyacid;Thebasesthatcanionizemultiplehydroxideions arepolybasic,whicharetakeninafewstepswhenionizing. Thistheoryisthatacidandalkalineutralizationreactionis acidionizationionsandalkalineionizedhydrogenfromthe ...
【AP化学】15.1 Brønsted Acids and Bases酸碱质子理论,布朗斯特酸碱 & 15.12 Lewis Acids and Bases 14:42 【AP化学】15.2 The Acid-Base Properties of Water&15.3 pH—A Measure of Acidity水的电离,pH 14:12 【AP化学】15.4 Strength of Acids and Bases 酸碱的强弱 13:47 【AP化学】15.5 Weak Ac...
d Equivalent neuron using an acid-base encoding with analog input values mapped to the corresponding pH value from the calculated range. Crossing lines indicate multiplying by −1. e Encoding of a 2 × 3 binary array of pixels into a well plate of acids (yellow) and bases (blue), ...
–pHischanged Acid-BaseReactions •ProduceasaltandH2O •2typesofAcids –StrongandWeak –Saltsareioniccompounds •2typesofBases –StrongandWeak •4possiblecombinationsofAcidsandBases ––––StrongA+StrongBStrongA+WeakBWeakB+StrongBWeakB+WeakA StrongAcid+StrongBase •HCl+NaOHNaCl+HOH•...
Any of a class of water-soluble compounds, having sour taste, that turn blue litmus red, and react with some metals to liberate hydrogen, and with bases to form salts. Any compound that easily donates protons; a Brønsted acid lysergic acid diethylamide (LSD) ...
Acid, any substance that in water solution tastes sour, changes the color of certain indicators (e.g., reddens blue litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with bases to form salts, and promotes certain chemical r
Some indicators can't identify acids or bases, but can only tell you the approximate pH of an acid or a base. For example, methyl orange only works at an acidic pH. It would be the same color above a certain pH (acidic) and also at neutral and alkaline values....