Standard States

Moderators: Chem_Mod, Chem_Admin

Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

Standard States

Postby KayleeMcCord1F » Sat Mar 17, 2018 3:04 pm

How do you know when a substance is in its standard state?

Joshua Hughes 1L
Posts: 81
Joined: Sat Jul 22, 2017 3:01 am
Been upvoted: 3 times

Re: Standard States

Postby Joshua Hughes 1L » Sat Mar 17, 2018 3:29 pm

by standard state do you mean its standard phase state (ie liquid solid etc)?
If so, if you are told that the temperature is RM Temp or 25 Celcius than it should be in its standard state. Two elements are liquid in their standard state: mercury and bromine. everything else you can kind of guess if it is solid or gas based on its placement on periodic tables or what you know about it. Metals are solid. Things to the right like oxygen and helium are gasses. Is there a certain test question or hw problem you are referencing?

Joanne Guan 1B
Posts: 30
Joined: Sat Jul 22, 2017 3:01 am

Re: Standard States

Postby Joanne Guan 1B » Sat Mar 17, 2018 10:20 pm

It's in standard state if the substance is at 25 C and 1 atm.

Return to “Phase Changes & Related Calculations”

Who is online

Users browsing this forum: No registered users and 1 guest