The two-property rule statement consists that ____.

The two-property rule statement consists that ____.

a. to fix state of pure substance of a given mass, the system should be in equilibrium
b. to fix state of pure substance of a given mass, any two independent intensive properties of the substance should be specified
c. both a. and b. conditions should be satisfied
d. none of the above

Correct Answer : c. both a. and b. conditions should be satisfied

Explanation :

The state of pure substance of a given mass can be fixed by specifying two independent intensive properties when the system is in equilibrium. Once any two properties of a pure substance is known then other properties can be calculated from available thermodynamic relations.