Leaf02

The reaction HCN + SO4-2 <=====> CN- + HSO4- favors: Ka = 1.2x10-2

The pH of an NH3 and NH4Cl solution is 9.20. What is the [H3O+]

Sodium propionate, NaC3H7O2, is used as a food preservative. What is the Kb of C3H7O2- given Ka HC3H7O2 = 3.4x10-5.

An aqueous solution has a pOH = 6.5. What is the [H3O+] of this solution?

Aspirin (acetylsalicylic acid) can cause stomach bleeding. Only the acid form can cross the stomach lining. Determine the ratio of base to its conjugate acid when the stomach pH=2.00. Ka aspirin = 2.75x10-5

What is the pH of a solution containing 0.81M HA and 0.35M A- ? Ka HA=5.45x10-8.

A 25.00mL sample of 0.100M HC2H3O2 is titrated with 0.100M NaOH. What is the pH after 25.00mL of NaOH have been added? Ka HC2H3O2 = 1.8x10-5.

What ratio of C2H3O2- to HC2H3O2 is needed in a solution where the pH=3.85? pKa HC2H3O2 = 4.74

The solubility of PbSO4 is 0.048g/1iter. What is the Ksp of PbSO4? (MM PbSO4 = 303.3)

What is the molar solubility of Ba3(PO4)2. Ksp Ba3(PO4)2 = 1.3x10-29