Identify the pair of intensive properties from the following.

Which of the following is not a state function of a thermodynamic system?

At equilibrium,all systems are closed systems. $A$ saturated solution of glucose in an open vessel is which type of system?

For the isothermal reversible expansion of an ideal gas,which of the following is correct?

For the reaction $H_{2}F_{2(g)} \rightarrow H_{2(g)} + F_{2(g)}$,$\Delta U = -59.6 \ kJ \ mol^{-1}$ at $27^{\circ} C$. The enthalpy change for the above reaction is $(-)$ $kJ \ mol^{-1}$ [nearest integer]. Given: $R = 8.314 \ J \ K^{-1} \ mol^{-1}$.

How will you calculate the work done on an ideal gas during compression,when the change in pressure is carried out in infinite steps?