2. Write T for true and F for false statement.
1) Heat and work are not state functions but their sum is a state function.
2) Greater the critical temperature of a gas more difficult it is to liquefy it
3) Surface energy differs from surface tension in term of their units.
4) In Boyle's law temperature remain constant.
5) According to Avogadro’s law equal volumes of all gases under the same conditions of
temperature and pressure contain equal number of molecules.
Answers
Answer :
State variables : To define a thermodynamics states of a system, we have to specify the values of certain mesurable quantities. These are called thermodynamic variable or state variable. A system can be completely defined by four variables namely pressure, temperature, volume and composition. A system is said to be in a certain definite state when all of its properties have definite value.. Between two fixed state the change in the value of state function is same irrespective of the path connection two states.
Example : T, V, P and U (internal energy), H (enthalpy) are state variables.
As enthalpy is state variable so it will depend upon temperature only, not on path