BT entanpi

1.      Calculate the equilibrium constant K at 25 ^oC for the reaction:
4NO_{2 (g)} 2N₂O_(g) + 3O_{2 (g)}
given that (O_{2 (g)}) = 0.0 kJ/mole, (N₂O_(g)) = +104.20 kJ/mole, and (NO_{2 (g)}) = +51.31 kJ/mole:

2.      Calculate the value of for the bicarbonate anion HCO^-_{3 (aq)} at 25 ^oC given that the reaction:
CO^-2_{3 (aq)} + H₂O_(l) HCO^-_{3 (aq)} + OH^-_(aq)
has K_b = 2.1 × 10^-4 and (CO^-2_{3 (aq)}) = -527.81 kJ/mole, (H₂O_(l)) = -237.13 kJ/mole, and (OH^-_(aq)) = -157.24 kJ/mole:

3.      Calculate the acid equilibrium constant K_a at 25 ^oC for the reaction:
HSO_{4 (aq)}^- H_(aq)⁺ + SO_{4 (aq)}^-2
given that (HSO_{4 (aq)}^-) = -755.91 kJ/mole, (H_(aq)⁺) = 0.00 kJ/mole, and (SO_{4 (aq)}^-2) = -744.53 kJ/mole:

4.      Calculate the value of for N₂O_{4 (g)} at 25 ^oC given that the reaction:
2N₂O_{4 (g)} 2N₂O_(g) + 3O_{2 (g)}
has K = 163 and (N₂O_(g)) = +104.20 kJ/mole and (O_{2 (g)}) = 0.00 kJ/mole: