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Calorimeter - Type of System
Posted: Tue Feb 12, 2019 1:11 pm
by madisondesilva1c
Is a calorimeter always isolated? Therefore, does delta U always equal work, assuming no heat can enter or leave the system?
Re: Calorimeter - Type of System
Posted: Tue Feb 12, 2019 1:27 pm
by Riya Shah 4H
A calorimeter is an isolated system so change in internal energy is always zero because neither there is a change in heat (q=0) nor there is any change in volume (w=0).
Re: Calorimeter - Type of System
Posted: Thu Feb 14, 2019 3:36 pm
by megan blatt 2B
Calorimeters are isolated systems because they are used to determine the heat capacities of substances, so no heat can be lost. Therefore, in calorimeters, it would be implied that the change in internal energy is equal to work since the change in heat is zero.
Re: Calorimeter - Type of System
Posted: Thu Feb 14, 2019 3:43 pm
by Emily Huang 1E
Calorimeters are isolated systems. that is why you can calculate the final temperature of water inside a calorimeter based on the mass of calorimeter and water and their heat capacities. The heat lost by the calorimeter is absorbed by water since the water is an isolated system and no heat is lost to surroundings
Re: Calorimeter - Type of System
Posted: Sat Feb 16, 2019 1:04 pm
by MackenziePerillo-1L
Also, a bomb calorimeter, an isolated system, will always have constant volume.
Re: Calorimeter - Type of System
Posted: Tue Feb 19, 2019 11:10 pm
by inlovewithchemistry
What are some other systems that will always be isolated?