q rev


Moderators: Chem_Mod, Chem_Admin

Emily Lo 1J
Posts: 50
Joined: Thu Sep 19, 2019 12:16 am

q rev

Postby Emily Lo 1J » Sat Feb 08, 2020 9:48 pm

In the equation delta S equals q rev over temperature, what exactly is q rev?

Tiffany_Chen 2K
Posts: 106
Joined: Fri Aug 30, 2019 12:15 am

Re: q rev

Postby Tiffany_Chen 2K » Sat Feb 08, 2020 10:37 pm

Heat for a reversible equation is qrev. Reversible equations are when the equation is at equilibrium.

rabiasumar2E
Posts: 108
Joined: Thu Jul 11, 2019 12:15 am

Re: q rev

Postby rabiasumar2E » Sat Feb 08, 2020 10:53 pm

'Rev' just means reversible so q rev is used when calculating the heat for a reversible reaction.

faithkim1L
Posts: 105
Joined: Fri Aug 09, 2019 12:17 am

Re: q rev

Postby faithkim1L » Sun Feb 09, 2020 12:03 am

When Lavelle uses Rev, it means that the reaction is reversible.

Kassidy Ford 1I
Posts: 103
Joined: Sat Aug 17, 2019 12:16 am
Been upvoted: 1 time

Re: q rev

Postby Kassidy Ford 1I » Sun Feb 09, 2020 11:27 am

Also notice that this equation can't be used if there is change in V, P, or T, because you have to use one other equations. This also implies reversibility.

chari_maya 3B
Posts: 108
Joined: Sat Sep 07, 2019 12:18 am

Re: q rev

Postby chari_maya 3B » Sun Feb 09, 2020 10:32 pm

When using deltaS = qrev/T to derive the equation for entropy under isothermal and isobaric conditions, work is used in replacementf for qrev. Why is this, and why does the equation end up being positive when work is negative?

Anna Chen 1K
Posts: 104
Joined: Thu Jul 25, 2019 12:18 am

Re: q rev

Postby Anna Chen 1K » Sun Feb 09, 2020 10:40 pm

q is heat while rev refers to a reversible reaction so q rev is used for calculating heat for a reversible reaction.

Trent Yamamoto 2J
Posts: 111
Joined: Sat Aug 17, 2019 12:18 am

Re: q rev

Postby Trent Yamamoto 2J » Mon Feb 10, 2020 12:29 pm

Q is the heat released/absorbed and rev refers to the fact that the reaction is reversible

JesseAuLec1Dis1G
Posts: 52
Joined: Mon Jun 17, 2019 7:23 am

Re: q rev

Postby JesseAuLec1Dis1G » Mon Feb 10, 2020 1:25 pm

the subscript rev just signifies that the reaction is reversible.

Anushka Chauhan2B
Posts: 51
Joined: Sat Aug 24, 2019 12:16 am

Re: q rev

Postby Anushka Chauhan2B » Mon Feb 10, 2020 1:54 pm

heat for the reversible reaction


Return to “Concepts & Calculations Using Second Law of Thermodynamics”

Who is online

Users browsing this forum: No registered users and 2 guests