For the reaction 2N2O5 (g) --> 4NO2 (g) + O2 (g), delta G_298 = -32 kJ/mol. Which of the following statements is correct? a) The reaction is always spontaneous at all conditions. b) The reaction is always nonspontaneous at all conditions. c) Kp for this reaction is less than 1.0 at 298K. d) The reaction could be non spontaneous at very high partial pressures of NO2 (g) and O2 (g). e) The reaction could be non spontaneous at very high partial pressures of N2O5 (g).

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.