HW 8.1

Moderators: Chem_Mod, Chem_Admin

Paula Sing 1J
Posts: 36
Joined: Fri Sep 29, 2017 7:06 am

HW 8.1

Postby Paula Sing 1J » Wed Jan 24, 2018 11:16 pm

Can someone explain how gasoline burning in an automobile engine is an open system, because to me it seems that it should be closed because the gas combusts within the engine which is in my mind a closed space.

Matthew Lee 3L
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

Re: HW 8.1

Postby Matthew Lee 3L » Wed Jan 24, 2018 11:19 pm

The reason it is an open system is because energy/matter is able to escape the system most likely, in this case, in the form of gas.

Chloe1K
Posts: 23
Joined: Fri Sep 29, 2017 7:05 am

Re: HW 8.1

Postby Chloe1K » Wed Jan 24, 2018 11:35 pm

the products would leave via the exhaust pipe into the surroundings and the reaction would heat up the surroundings as well. both matter and energy can be exchanged with surroundings so it is an open system

Katherine Jordak 1H
Posts: 51
Joined: Fri Sep 29, 2017 7:05 am

Re: HW 8.1

Postby Katherine Jordak 1H » Sun Jan 28, 2018 7:34 pm

Another way to look at this is that you know gasoline somehow continually enters the engine every time you fill up the tank in your car. It isn't a manual process with a separate reaction each time you do it. You know for sure matter is going into the engine constantly, so it cannot be a closed system.


Return to “Phase Changes & Related Calculations”

Who is online

Users browsing this forum: No registered users and 1 guest