Given the following equation and equilibrium constant: 2H2(g) + S2(g)  ⇌ 2H2S(g)    K = 1.08 x 107 determine K for the following reaction H2S(g)  ⇌ H2(g)  + S2(g)  K = ?

Phosphorus pentachloride decomposes into phosphorus trichloride and chloring gas at 250oC. PCl5(g) ⇌ PCl3(g) + Cl2(g) If 0.98 M PCl5, 0.188 M PCl3 and 0.188 M Cl2 are present at equilibrium: Show all your work and setup for credit. A) Calculate KC for this reaction. B) Calculate KP for this reaction.

What is the freezing point of a solution of 9.25 g of I2 (253.80 g/mol) in 50.0 g of benzene? (Freezing point of benzene = 5.5 oC, Kf for benzene = 5.12 oC/m) 

The half-life of a first-order reaction is 0.300 s. What is the rate constant?

What is the boiling point of a solution prepared by dissolving 320.0 g of S8 (molar mass = 256.5 g/mol) in 1500.0 g of CCl4? (Kb = 5.05oC/m, boiling point of pure CCl4 = 76.7oC)

Consider the following reactions 2A(g) +  B(g) ⇌ D(g)   K = 0.250 C(g) ⇌ D(g)     K = 575 Use the information above to calculate the equilibrium constant for the following reaction. C(g) ⇌ 2A(g) + B(g)  K = ?

Oxygen and fluorine react to form OF2. O2(g) + F2(g) ⇌ OF2(g) K = 40 at 298 K Given the information above, calculate the equilibrium constant for the following reaction at 298 K O2(g) + 2F2(g) ⇌ 2OF2(g)  K = ?

Which of the following is true for a chemical reaction at equilibrium?

For the reaction , N2(g) + 3H2(g) → 2NH3(g), the rate of formation of NH3 is 0.345 M/s. What is the corresponding rate of disappearance of N2 ?

Human blood has a molar concentration of solutes of 0.30 M. What is the osmotic pressure of blood at 25oC in atm?  R=0.0821 (atm L)/(mol K). Show all your work and setup for credit.