{"id":544,"date":"2013-11-24T09:23:43","date_gmt":"2013-11-24T07:23:43","guid":{"rendered":"https:\/\/wissen.science-and-fun.de\/chemistry\/?page_id=544"},"modified":"2013-11-24T09:23:43","modified_gmt":"2013-11-24T07:23:43","slug":"concentration","status":"publish","type":"page","link":"https:\/\/wissen.science-and-fun.de\/chemistry\/chemistry\/concentration\/","title":{"rendered":"Concentration"},"content":{"rendered":"

Chemical concentration ratios and their conversion<\/span><\/h1>\n
\n

1\u00a0Molar concentration\u00a0<\/strong>
\nThe molar concentration of a substance B in a solution of the quotient of the number of moles of substance B and the volume of the solution Lg The corresponding SI unit is 1 mol \/ m\u00b3.\u00a0Furthermore, mol\/l, \u00a0mol\/dm \u00b3, mmol\/l, mol\/ml, kmol\/m\u00b3 permitted.\u00a0A solution with the molar concentration of 1 mol\/l is also referred to as a 1 molar (abbreviated 1 M).<\/p>\n

c\u00a0B<\/sub>\u00a0= n\u00a0B<\/sub>\u00a0\/ v\u00a0Lg<\/sub><\/p>\n

2\u00a0Equivalent concentration\u00a0<\/strong>
\nThe equivalent concentration, also called norm, of a substance B in a solution is defined as the quotient of the Soffmenge the equivalent (the number of equivalents is given by the stoichiometric value z of a molecule) and the volume of the solution.\u00a0Apply the same units as the molar concentration.
\nA solution of the equivalent concentration c\u00a0\u00c4, B<\/sub>\u00a0of 1 mol \/ l is referred to as 1 Normal (short 1N).<\/p>\n

c\u00a0\u00c4, B<\/sub>\u00a0= n\u00a0\u00c4, B<\/sub>\u00a0\/ v\u00a0Lg<\/sub>\u00a0= c\u00a0B<\/sub>\u00a0* z = (n\u00a0B<\/sub>\u00a0* z) \/ v\u00a0Lg<\/sub><\/p>\n

3\u00a0Molality\u00a0<\/strong>
\nThe molality of a substance B in a solution is defined as the quotient of the number of moles of substance B and the mass of the solvent Lm The resulting valid SI unit is 1 mol\/kg.
\nA solution of molality\u00a0m c, B<\/sub>\u00a0= 1 mol \/ kg is also designated as 1 molal.<\/p>\n

c\u00a0m, B<\/sub>\u00a0= n\u00a0B<\/sub>\u00a0\/ m\u00a0Lm<\/sub><\/p>\n

4\u00a0Mass concentration\u00a0<\/strong>
\nThe mass concentration of a substance B in a solution is defined as the ratio of the mass of the substance B and the volume of the solution.
\nThe SI unit is 1 kg \/ m\u00b3.\u00a0Furthermore, the following units are permitted: g \/ l, mg \/ ml, mg \/ l, g \/ cm \u00b3, ug \/ ml.\u00a0Are not permitted ratio units such as%, \u2030, ppb and ppm and mg% and g% (= g\/100 ml)<\/p>\n

\u03c1\u00a0B<\/sub>\u00a0= m\u00a0B<\/sub>\u00a0\/ v\u00a0Lg<\/sub><\/p>\n

5\u00a0Volume concentration<\/strong>
\nThe volume concentration of a substance B in a mixing stage is defined as the quotient of the volume of the substance B, and the total volume of the mixing phase.
\nThe corresponding SI unit is m\u00b3 \/ m\u00b3.\u00a0Furthermore permitted are l \/ l, l \/ m\u00b3, cm \u00b3 \/ l and l \/ hl.<\/p>\n

\u03c3\u00a0B<\/sub>\u00a0= v\u00a0B<\/sub>\u00a0\/ v\u00a0tot<\/sub><\/p>\n

6\u00a0Amount of substance<\/strong>
\nThe amount of substance (mole fraction called) of a substance B in a mixed phase is defined as the quotient of the molar amount of the substance B and the sum of the molar amounts of all components of the mixed phase.
\nThe SI unit is mol \/ mol, and mmol \/ mol, mol \/ kmol,% \u2030, ppm and ppb are permitted.<\/p>\n

\u03c7\u00a0B<\/sub>\u00a0= n\u00a0B<\/sub>\u00a0\/ n \u03a3\u00a0i<\/sub><\/p>\n

7\u00a0Mass fraction\u00a0<\/strong>
\nThe mass fraction (also called mass fraction) of a substance B in a mixed phase is defined as the ratio of the mass of the substance B and the sum of the masses of all the components of the mixed phase.
\nThe associated SI unit is kg \/ kg, g \/ kg, mg \/ g, mg \/ kg, g \/ g% \u2030, ppm and ppb are also permitted.<\/p>\n

w\u00a0B<\/sub>\u00a0= m\u00a0B<\/sub>\u00a0\/ m \u03a3\u00a0i<\/sub><\/p>\n

8\u00a0Volume fraction\u00a0<\/strong>
\nThe volume fraction (also called the volume fraction) of a substance B in a mixing stage is defined as the quotient of the volume of the substance B and the sum of the volumes of all components of the mixed phase.
\nThe SI unit is m\u00b3 \/ m\u00b3.\u00a0Furthermore, are permitted: l \/ l, l \/ m\u00b3, cm \u00b3 \/ l, ml \/ l,%, \u2030, ppm and ppb.<\/p>\n

\u03c6\u00a0B<\/sub>\u00a0= v\u00a0B<\/sub>\u00a0\/ v \u03a3\u00a0i<\/sub><\/p>\n

Conversion of concentration variables<\/h2>\n<\/div>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t
<\/td>cB<\/sub><\/th>cm, B<\/sub><\/th>ρB<\/sub><\/th>χB<\/sub><\/th>wB<\/sub><\/th>\n<\/tr>\n<\/thead>\n
cB<\/sub> =<\/td> cB<\/sub><\/td>( cm, B<\/sub> * ρ) \/ (1+ cm, B<\/sub> * MB<\/sub>)<\/td>ρB<\/sub>\/MB<\/sub><\/td>(xB<\/sub> * ρ) \/ (Σ χi<\/sub> * Mi<\/sub>)<\/td>(wB<\/sub> * ρ)\/MB<\/sub><\/td>\n<\/tr>\n
cn, B<\/sub> =<\/td>cB<\/sub>\/ (ρ - cB<\/sub>*MB<\/sub>)<\/td>cm, B<\/sub><\/td>ρB<\/sub>\/ (MB<\/sub>(ρ - ρB<\/sub>))<\/td>χB<\/sub>\/ (χLm<\/sub> * MLm<\/sub>)<\/td>wB<\/sub>\/ (wLm<\/sub> * MB<\/sub>)<\/td>\n<\/tr>\n
ρB<\/sub> =<\/td>cB<\/sub> * MB<\/sub><\/td>(cm, B<\/sub> * MB<\/sub> * ρ) \/ (1 + cm, B<\/sub> * MB<\/sub>)<\/td>ρB<\/sub><\/td>(χB<\/sub> * MB<\/sub> * ρ) \/ Σ χi<\/sub> * Mi<\/sub>)<\/td>wB<\/sub> * ρ<\/td>\n<\/tr>\n
χB<\/sub> =<\/td>(cB<\/sub> * MLm<\/sub>) \/ (ρ + cB<\/sub>(MLm<\/sub> - MB<\/sub>))<\/td>(cm, B<\/sub> * MLm<\/sub>) \/ (1 + cm, B<\/sub> * MLm<\/sub>))<\/td>(ρB<\/sub> * MLm<\/sub>) \/ (ρB<\/sub> * MLm<\/sub> + MB<\/sub> * (ρ - ρB<\/sub>))<\/td>χB<\/sub><\/td>wB<\/sub> \/ ( MB<\/sub> * Σ (wi<\/sub> \/ Mi<\/sub>))<\/td>\n<\/tr>\n
wB<\/sub> =<\/td>(cB<\/sub> * MB<\/sub>) \/ ρ<\/td>(cm, B<\/sub> * MB<\/sub>) \/ ( 1 + cm, B<\/sub>* MB<\/sub>)<\/td>ρB<\/sub> \/ ρ<\/td>(χB<\/sub> * MB<\/sub>) \/ (Σ χi<\/sub> * Mi<\/sub>)<\/td>wB<\/sub><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n","protected":false},"excerpt":{"rendered":"

Chemical concentration ratios and their conversion 1\u00a0Molar concentration\u00a0 The molar concentration of a substance B in a solution of the quotient of the number of moles of substance B and the volume of the solution Lg The corresponding SI unit is 1 mol \/ m\u00b3.\u00a0Furthermore, mol\/l, \u00a0mol\/dm \u00b3, mmol\/l, mol\/ml, kmol\/m\u00b3 permitted.\u00a0A solution with the … <\/p>\n

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