Standard conditions

the standard conditions (NTP for normal temperature and pressure) are not world-wide uniformly defined contrary to the standard conditions.

For Europe historically the conditions from Paris are consulted:

Further usually T = 293.15 is K ≙ 20 °C and is the atmospheric pressure ρ= 1.204 kg/m ³.

In chemistry and in biochemistry standard conditions contain beyond that defined concentrations of the reaction partners, under normal conditions 1 mol/l (1 M). In biochemistry an exception applies to protons (H +). All data become here up , which corresponds to 10 -7 mol/l H + and represents also quasi-physiological conditions, thus conditions referred pH 7 like it normally also in the body and/or. occur in the cell inside.

see also

 

  > German to English > de.wikipedia.org (Machine translated into English)