STP vs. Standard State

  1. STP is 273 K(0 C) and 1 atm while Standard State is 298 K(25 C).

    Besides the numerical difference, when is which used? In problems sets that I receive, whether or not STP or Standard state is used is often stated but sometimes not.

    More importantly, why is there such a difference? Is it only convention or is there reasoning for the differences?
     
  2. jcsd
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