- Hydrogen ions -
Download and print pH Ion Concentration Chart
pH values in some common products:
|HCl in stomach acid||1|
|Lemon juice, vinegar||2-3|
|Indicator||pH - Range||Color Cange|
|Thymol blue||1.2 - 2.8||red||yellow|
|Pentamethoxy red||1.2 - 2.3||red - violet||colorless|
|Tropeolin||1.3 - 3.2||red||yellow|
|2,4 - Dinitrophenol||2.4 - 4.0||colorless||yellow|
|Methyl yellow||2.9 - 4.0||red||yellow|
|Methyl orange||3.1 - 4.4||red||orange|
|Congo red||3.0 - 4.2||blue-violet||red-orange|
|Bromphenol blue||3.0 - 4.6||yellow||blue - violet|
|Tetrabromphenol blue||3.0 - 4.6||yellow||blue|
|Alizarin sodium sulfonate||3.7 - 5.2||yellow||violet|
|α - Naphthyl red||3.7 - 5.0||red||yellow|
|p - Ethoxychrysoidine||3.5 - 5.5||red||yellow|
|Bromcresol green||4.0 - 5.6||yellow||blue|
|Methyl red||4.4 - 6.2||red||yellow|
|Bromcresol purple||5.2 - 6.8||yellow||purple|
|Chlorphenol red||5.4 - 6.8||yellow||red|
|Bromphenol blue||6.2 - 7.6||yellow||blue|
|p - Nitrophenol||5.0 - 7.0||colorless||yellow|
|Litmus||5.0 - 8.0||red||blue|
|Azolitmin||5.0 - 8.0||red||blue|
|Phenol red||6.4 - 8.0||yellow||red|
|Neutral red||6.4 - 8.0||red||yellow|
|Rosolic acid||6.8 - 8.0||yellow||red|
|Cresol red||7.2 - 8.8||yellow||red|
|α - Naphtholphthalein||7.3 - 8.7||rose||green|
|Tropeolin||7.6 - 8.9||yellow||rose - red|
|Thymol blue||8.0 - 9.6||yellow||blue|
|Phenolphthalein||8.0 - 10.0||colorless||red|
|α - Naphtholbenzein||9.0 - 11.0||yellow||blue|
|Thymolphthalein||9.4 - 10.6||colorless||blue|
|Nile blue||10.1 - 11.1||blue||red|
|Alizarin yellow||10.0 - 12.0||yellow||lilac|
|Salicyl yellow||10.0 - 12.0||yellow||orange - brown|
|Diazo violet||10.1 - 12.0||yellow||violet|
|Tropeolin||11.0 - 13.0||yellow||orange - brown|
|Nitramine||11.0 - 13.0||colorless||orange - brown|
|Poirrier's blue||11.0 - 13.0||blue||violet - pink|
|Trinitrobenzoic acid||12.0 - 13.4||colorless||orange - red|
The SI-system, unit converters, physical constants, drawing scales and more.
Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.
pH range vs. color change for acid and base indicators - together with pKa and structures of the indicators.
pH values of acids like sulfuric, acetic and more..
Molweight, melting and boiling point, density, pKa-values, as well as number of carbon and hydrogen atoms in molecules are given for 150 different alcohols and acids.
Values for the negative logarithm of the acid dissociation constant, pKa, of the conjugated acid of amines, diamines and cyclic organic nitrogen compounds, shown together with the molecular structure of the acids.
pH values for bases like sodium hydroxide, ammonia and more.
pH in common food products - like apples, butter, wines and more.
Values for the negative logarithm of the acid dissociation constant, pKa, of inorganic acids and bases, as well as hydrated metal ions.
The rules of logarithms - log10 and loge for numbers ranging 1 to 1000.
pH in human materials like blood, salvia and more.
For oxygen containing organic compounds this is given: pKa (the negative logarithm of the acid dissociation constant), molecular structures, molar weights, density and melting and boiling points.
The most common strong acids and bases, and some examples of weak acids and bases, together with definition of strong and weak acids and bases.
Density of sulfuric acid at various temperatures and concentrations.
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