For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?

Which of the following lines correctly show the temperature dependence of equilibrium constant K, for an exothermic reaction?

The combustion of benzene(l) gives CO₂(g) and H₂O(l). Given that heat of combustion of benzene at constant volume is –3263.9 kJ mol^–1 at 25^oC; heat of combustion (in kJ mol^–1) of benzene at constant pressure will be :
(R = 8.314 JK^–1 mol^–1)

According to molecular orbital theory, which of the following will not be a viable molecule?