1. Select the strongest acid from the following: A) HClO3 or HClO2 B) HBr or HF 2. Select the strongest base from the following: C) BrO- or BrO2- 3. Which will be more soluble in an acidic solution? D) CuCl2 or CuF2

A reaction vessel is charged with COF2, which partially decomposes to carbon dioxide and carbon tetrafluoride. 2COF2(g) ⇌ CO2(g) + CF4(g) When the system comes to equilibrium at 1000oC,  partial pressure of COF2 = 1.50 atm, partial pressure of CO2 = 0.135 atm and partial pressure of CF4 = 0.255 atm. Show all your work and setup for credit. A) Calculate KP for this reaction. B) Calculate KC for this reaction.

Classify the following as Lewis acid or Lewis base. a) NBr3 b) Cr3+

Consider the following reaction: N2O4(g) ⇌ 2NO2(g)   Kp = 47.9 at 400 K Suppose that 2.50 atm of N2O4 decomposes and reaches equilibrium at 400 K. Determine the partial pressure of NO2 at equilibrium. Show all of your work including the ICE chart for credit.

Select the strongest intermolecular force in each of the following. 1) Cl2 – 2) C2H6 – 3) NF3 – 4) BF3 – 5) CH3Cl –

How much heat (in J), is necessary when 54.0 g of ice at

Calculate the pH of a solution with a hydroxide ion concentration of 5.25 x 10-6 M at 25oC.

Calculate the pH of a buffer containing 2.50 M formic acid, HCOOH (Ka = 1.8 × 10-4) and 1.25 M sodium formate, HCOONa.You must show all of your work for credit.

Determine the Ka for CH3NH3+ at 25°C. The Kb for CH3NH2 is 4.4 × 10-4.

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 = ?