Delta T

Moderators: Chem_Mod, Chem_Admin

Lindsey Chheng 1E
Posts: 110
Joined: Fri Aug 30, 2019 12:16 am

Delta T

Postby Lindsey Chheng 1E » Tue Jan 28, 2020 10:27 pm

Why does an endothermic reaction have a -delta T and an exothermic reaction have a +delta T?

005391550
Posts: 103
Joined: Thu Jul 25, 2019 12:15 am

Re: Delta T

Postby 005391550 » Tue Jan 28, 2020 10:30 pm

an exothermic reaction will release heat which will raise the temperature of the surroundings and an endothermic reaction will therefore do the opposite

Elizabeth Harty 1A
Posts: 125
Joined: Sat Jul 20, 2019 12:16 am

Re: Delta T

Postby Elizabeth Harty 1A » Tue Jan 28, 2020 10:33 pm

005391550 wrote:an exothermic reaction will release heat which will raise the temperature of the surroundings and an endothermic reaction will therefore do the opposite

if heat is released for exothermic rxns why is delta t negative?

Zaynab Hashm 2I
Posts: 110
Joined: Wed Sep 11, 2019 12:15 am
Been upvoted: 1 time

Re: Delta T

Postby Zaynab Hashm 2I » Tue Jan 28, 2020 11:50 pm

delta T (change in temperature) calculated for a system shows whether a reaction is endothermic (absorbs energy) or exothermic (releases energy)

if a reaction is endothermic, it absorbs the heat energy, therefore decreases (-) the overall temperature of the system
if a reaction is exothermic, it releases the heat energy, therefore increases (+) the overall temperature of the system

Zaynab Hashm 2I
Posts: 110
Joined: Wed Sep 11, 2019 12:15 am
Been upvoted: 1 time

Re: Delta T

Postby Zaynab Hashm 2I » Tue Jan 28, 2020 11:52 pm

Elizabeth Harty 1A wrote:
005391550 wrote:an exothermic reaction will release heat which will raise the temperature of the surroundings and an endothermic reaction will therefore do the opposite

if heat is released for exothermic rxns why is delta t negative?

for exothermic reactions, delta T is positive as temperature increases (due to the heat being released)


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 1 guest