<Ul> <Li> Until 1982, STP was defined as a temperature of 273.15 K (0 ° C, 32 ° F) and an absolute pressure of exactly 1 atm (1.01325 × 10 Pa). </Li> <Li> Since 1982, STP is defined as a temperature of 273.15 K (0 ° C, 32 ° F) and an absolute pressure of exactly 10 Pa (100 kPa, 1 bar). </Li> </Ul> <Li> Until 1982, STP was defined as a temperature of 273.15 K (0 ° C, 32 ° F) and an absolute pressure of exactly 1 atm (1.01325 × 10 Pa). </Li> <Li> Since 1982, STP is defined as a temperature of 273.15 K (0 ° C, 32 ° F) and an absolute pressure of exactly 10 Pa (100 kPa, 1 bar). </Li> <P> STP should not be confused with the standard state commonly used in thermodynamic evaluations of the Gibbs energy of a reaction . </P>

At stp temperature and pressure have the values of