Question

An isolated system is that system in which:
A) There is no exchange of Energy with the surroundings.
B) There is exchange of mass and energy with the surroundings.
C) There is no exchange of energy and mass with the surroundings.
D) There is exchange of energy and mass with the surroundings.

Answer 1

Hint: The answer here is based on the basic concept of physical chemistry that deals with the chapters of the thermodynamics and the definition for this gives the answer. Isolated system means the system enclosed by rigid immovable walls.

Complete step by step answer:
In the classes of physical chemistry, we have dealt with the topic thermodynamics and this is the base for all the physical reactions taking place in the system and surroundings.
Let us refresh the definition of it and also know the parameters which help us to approach the correct answer.
- Thermodynamics or chemical thermodynamics is the study of the inter relation of heat and work with the change in the physical or chemical state of states of matter that confines the laws of thermodynamics.
- An isolated system is the one in which the system is made of rigid immovable walls in such a way that it will not be able to exchange anything with the surroundings.
- In simple words, the isolated system can be said as the sealed system where neither matter nor energy can be exchanged between the system and the surroundings.
- Isolated systems can also be said according to physical science that it is the system which is removed from the other system such that it does not interact with them.

Therefore, based on these above facts we can say that the correct answer is option C) There is no exchange of energy and mass with the surroundings.

Note: The isolated system obeys the law of conservation of mass and energy that is it does not change and remains constant and also the total work transferred in this system is zero that is there is no positive or negative work.