First slide

Thermodynamic terms

Question

Select the correct statement about the system.

Easy

A

Reactants in an open beaker is an example of open system
B

Reactants in closed insulated vessel is an example of closed system
C

Reactants in closed conducting vessel is an example of open system
D

Reactants in closed conducting vessel is an example of isolated system

Solution

Reactants in an open beaker is an example of open system. In an isolated system, there is no exchange of energy and matter between the system and the surroundings. The presence of reactants in a thermos flask or any other closed insulated vessel is an example of an isolated system. Variables like P,V,T are called state variable or state functions.

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