Questions from General Chemistry

Q: List several general properties of activity coefficients.

List several general properties of activity coefficients.

Q: Find the amount of the indicated element (in moles) in

Find the amount of the indicated element (in moles) in a. 5.32 g of B2O3. b. 195.7 mg of Na2B4O7 ? 10H2O. c. 4.96 g of Mn3O4. d. 333 mg of CaC2O4.

Q: Two different analytical methods were used to determine residual chlorine in sewage

Two different analytical methods were used to determine residual chlorine in sewage effluents. Both methods were used on the same samples, but each sample came from various locations with differing am...

Q: Neglecting any effects caused by volume changes, would you expect the

Neglecting any effects caused by volume changes, would you expect the ionic strength to (1) increase, (2) decrease, or (3) remain essentially unchanged when NaOH is added to a dilute solution of a....

Q: Write the mass-balance expressions for a solution that is

Write the mass-balance expressions for a solution that is a. 0.2 M in HF. b. 0.25 M in NH3. c. 0.10 M in H3PO4. d. 0.15 M in Na2HPO4. e. 0.0500 M in HClO2 and 0.100 M in NaClO2. f. 0.12 M in NaF...

Q: Write the charge-balance equations for the solutions in Problem 9

Write the charge-balance equations for the solutions in Problem 9-5.

Q: Calculate the molar solubility of ZnC2O4 in a solution that has a

Calculate the molar solubility of ZnC2O4 in a solution that has a fixed H3O1 concentration of a. 1.0 × 10-6 M. b. 1.0 × 10-7 M. c. 1.0 × 10-9 M. d. 1.0 × 10-11 M.

Q: Calculate the molar solubility of BaSO4 in a solution in which 3H3O14

Calculate the molar solubility of BaSO4 in a solution in which 3H3O14 is a. 3.5 M. b. 0.75 M. c. 0.080 M. d. 0.100 M.

Q: Calculate the molar solubility of PbS in a solution in which 3H3O14

Calculate the molar solubility of PbS in a solution in which 3H3O14 is held constant at a. 3.0 × 10-1 M b. 3.0 × 10-4 M.

Q: Calculate the concentration of CuS in a solution in which 3H3O14 is

Calculate the concentration of CuS in a solution in which 3H3O14 is held constant at a. 2.0 × 10-1 M b. 2.0 × 10-4 M.