Which of the following aqueous solutions exhibits lowest freezing point depression assuming complete dissociation?

Which of the following set of thermodynamic conditions is true for the reaction to be spontaneous at high temperature?

Calculate the energy per mole of photon of electromagnetic radiation having wavelength $700 \mathrm{~nm}\left[\mathrm{~h}=6.626 \times 10^{-34} \mathrm{Js}, \mathrm{c}=3 \times 10^8 \mathrm{~m} / \mathrm{s}\right]$