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Question
Which of the following statements is CORRECT?
Options
The presence of reacting species in a covered beaker is an example of open system.
There is an exchange of energy as well as matter between the system and the surroundings in a closed system.
The presence of reactants in a closed vessel made up of copper is an example of a closed system.
The presence of reactants in a thermos flask or any other closed insulated vessel is an example of a closed system.
Solution
The presence of reactants in a closed vessel made up of copper is an example of a closed system.
Explanation:
A closed system is one that can interchange energy in the form of heat, work, or radiations with its surroundings but not matter.
Reactants in a closed copper vessel can only exchange energy through the vessel's walls. There is no exchange of matter between the reactants (i.e., system) and their surroundings.
