q=nCT

Moderators: Chem_Mod, Chem_Admin

Nick Fiorentino 1E
Posts: 102
Joined: Wed Sep 18, 2019 12:16 am

q=nCT

Postby Nick Fiorentino 1E » Fri Jan 31, 2020 7:02 pm

For this equation, will n always be in moles? In the book solutions, I've seen both moles and grams used and am not sure when to use which

VPatankar_2L
Posts: 104
Joined: Thu Jul 25, 2019 12:17 am
Been upvoted: 1 time

Re: q=nCT

Postby VPatankar_2L » Fri Jan 31, 2020 7:49 pm

The formula for heat can be either q=nCT where n stands for the number of moles, or it can be q=mCT where m stands for the mass in grams. The formula you use will depend on whether the specific heat capacity (C) is given as J/gK where you would use q=mCT or if it is given as J/molK where you would use q=nCT.

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

Re: q=nCT

Postby Kassidy Ford 1I » Fri Jan 31, 2020 8:20 pm

^^^ like they said, pay attention to the specific heat given. If you are given molar heat capacity (Cm), you use moles (n). If you are given specific heat capacity (Csp), then use grams. Make sure the units match!


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 2 guests