An ideal gas is allowed to expand from $1 \, L$ to $10 \, L$ against a constant external pressure of $1 \, bar$. The work done in $kJ$ is

Which of the following sets represents the normal physical states of the elements concerned at $25\,^{\circ}C$ and $1 \ bar$ pressure,for which $\Delta H^{\circ}_{f} = 0$?

$6$ moles of an ideal gas expand isothermally and reversibly from a volume of $1$ litre to a volume of $10$ litres at $27\,^oC$. What is the maximum work done (in $, kJ$)?

Graphically show the total work done in an expansion when the state of an ideal gas is changed reversibly and isothermally from $(P_i, V_i)$ to $(P_f, V_f)$. With the help of a $pV$ plot,compare the work done in the above case with that carried out against a constant external pressure $P_f$.

For a chemical reaction,when does $\Delta H = \Delta U$ occur?

The change in internal energy of a system depends upon