For water at atmospheric pressure

CHEMISTRY · Single correct · AP · Chemistry · Thermochemistry · Thermochemistry

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}

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

(d) Melting ice at

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