Reference no: EM131906462

1. A sample of 8.00 L of NH3 (ammonia) gas at 22 °C and 735 torr is bubbled into a 0.350 L solution of 0.400 MHCl(hydrochloric acid). The Kb value for NH3 is 1.8×10-5. Assuming all the NH3 dissolves and that the volume of the solution remains at 0.350 L , calculate the pH of the resulting solution.

2. Calculate the molar solubility of SrF2 in the following substances.

1.5×10^-2 M Sr(NO3)2

1.3×10^-2 M NaF

3. What is the value of Q when the solution contains 2.00×10^-2 M Ca2+ and 3.00×10-2M CrO42-?

4. What concentration of the barium ion, Ba2+, must be exceeded to precipitate BaF2 from a solution that is 1.00×10-2 M in the fluoride ion, F-? Ksp for barium fluoride is 2.45×10^-5.