Chemistry

Problem

For water at atmospheric pressure, which of the following phase changes is associated with an enthalpy change closest to

+40.7\,\text{kJ\,mol}^{-1}

? a) Condensing steam at

100\,^{\circ}\text{C}

b) Subliming ice at

0\,^{\circ}\text{C}

c) Boiling liquid water at

100\,^{\circ}\text{C}

d) Melting ice at

0\,^{\circ}\text{C}