Which of the following property of a system can be changed by transfer of heat from the surrounding to the system or vice-versa without expenditure of work?
1. Enthalpy
2. Internal energy
3. Both 1. and 2.
4. None of these
Dear Student,
The correct option is Internal energy.
We can change the internal energy of a system by transferring heat from it to the surrounding or vice-versa. This happens because of the difference in temperature between the system and the surrounding. One is at a high temperature than the other.Heat will either enter the system or it will leave the system. This heat is called as q.
For example- There is a cup with hot tea in it. We leave the cup for a minute or two in the room to cool down. Here, heat flows from higher temp. of the cup to lower temp. of the room.
Regards.
The correct option is Internal energy.
We can change the internal energy of a system by transferring heat from it to the surrounding or vice-versa. This happens because of the difference in temperature between the system and the surrounding. One is at a high temperature than the other.Heat will either enter the system or it will leave the system. This heat is called as q.
For example- There is a cup with hot tea in it. We leave the cup for a minute or two in the room to cool down. Here, heat flows from higher temp. of the cup to lower temp. of the room.
Regards.