Fred F. schreef:De Standaard condities zijn 25 oC en 1 atmosfeer (1,01325·10^5 Pa).

Echter: de Normaal condities zijn 0 oC en 1 Bar (10^5 Pa) en dat is wat voor het vraagstuk hier gebruikt moet worden.

Ik neem aan dat ergens in Binas ook zal staan dat 1 kmol ideaal gas = 22,4 Nm3 ideaal gas, waarbij N staat voor Normaal.

V_m: molair volume

(ideaal gas bij T=273,15 K en p=p₀): 2,24141·10^-2m³mol^-1

(gasvormige stof bij T=298 K en p=p₀): 2,45·10^-2m³mol^-1

Standard conditions for temperature and pressure

In chemistry and other sciences, STP or standard temperature and pressure is a standard set of conditions for experimental measurements, to enable comparisons to be made between sets of data. Internationally, the current STP defined by the IUPAC (International Union of Pure and Applied Chemistry) is an absolute pressure of 100 kPa (1 bar) and a temperature of 273.15 K (0 °C).[1] Other organizations have established a variety of alternative definitions for the standard reference conditions of temperature and pressure, such as the SATP amongst others.

In industry and commerce, it is necessary to define the standard reference conditions of temperature and pressure when expressing a gas volume or a volumetric flow rate because the volume of a gas varies with the temperature and pressure of the gas. The available data on the various definitions of standard reference conditions clearly indicates that the IUPAC's STP is not a universally accepted definition of the standard conditions of temperature and pressure. For that reason, simply stating that a gas flow rate is 10,000 m³/h (i.e. cubic meters per hour) at "standard conditions" or at "STP" has no meaning unless the reference conditions that were applied are clearly stated.

In aeronautics and fluid dynamics the term "International Standard Atmosphere" is often used to denote the variation of the principal thermodynamic variables (pressure, temperature, density, etc.) of the atmosphere with altitude at mid latitudes.