A reaction vessel is charged with HI, which partially decomposes to molecular hydrogen and iodine. 2HI(g) ⇌ H2(g) + I2(g) When the system comes to equilibrium at 425oC,  partial pressure of HI = 0.708 atm, partial pressure of H2 = 0.0960 atm and partial pressure of I2 = 0.0960 atm. Show all your work and setup for credit. A) Calculate KP for this reaction. B) Calculate KC for this reaction.

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 = ?

Consider the following reaction: Cl2(g) + CHCl3(g) → HCl(g) + CCl4(g) If the initial concentration of Cl2 was 0.780 M and the concentration of Cl2 was 0.480 M after 166.0 s, what is the rate of the reaction?

Predict the ideal van’t Hoff factor (i) for KNO4.

For a given substance, which of the following phase transition is not endothermic?

An equilibrium that strongly favors products has ____________

Select the strongest intermolecular force in each of the following. 1) Br2 – [a] 2) CH4 – [b] 3) NH3 – [c] 4) BF3 – [d] 5) CH3Cl – [e]

A reaction mixture contains 0.0500 M NO, 0.0155 M Cl2, and 1.50 M NOCl for the reaction shown below: 2NO(g) + Cl2(g) ⇌ 2NOCl(g)              KC = 46000 at 400 K Show all your work and setup for credit. A) Calculate QC for the reaction. B) Is the reaction at equilibrium? C) If the reaction is not at equilibrium, will it proceed to form more reactants or more product?

How many grams of ethanol (C2H5OH) can be vaporized at its boiling point by 725 kJ of heat? (∆Hvap of ethanol is 38.56 kJ/mol, molar mass of ethanol = 46.068 g/mol) Show all your work and setup for credit.

Given the following four aqueous solutions (assume complete dissociation): Solution 1 0.36 m CH3CH2OH Solution 2 0.21 m CaF2 Solution 3 0.11 m NaBr Solution 4 0.32 m NH3   1) Which solution has the highest osmotic pressure? [a] 2) Which solution has the lowest boiling point? [b] 3) Which solution has the highest freezing point? [c] 4) Which solution has the lowest vapor pressure? [d]