The Ksp of Ag2C2O4 is 3.5 x 10-11 . What is the solubility of Ag2C2O4(s) in moles per liter (mol/L) pure water? (Note: The molar mass of Ag2C2O4 is not needed in this problem, which asks for molesper L.) a. 4.2 x 10-6 mol/L b. 3.3 x 10-4 mol/L c. 2.1 x 10-4 mol/L d. 5.9 x 10-6 mol/L  e. 8.8 x 10-12 mol/L 

Which is the correct equation for 12956Ba decaying by electron capture?  a. 56129Ba  →  55129Cs +  +1 0e b. 56129Ba + -1 0e →  57 129La c. 56129Ba + -1 0e → 55129Cs d. 56129Ba → 57 129La + -1 0e e. 56129Ba → 54 125Xe + 2 4He

The Ksp of bismuth iodide, BiI3 [Molar Mass = 589.68], is 8.1 x 10-19. If BiI3 (s) is dissolved in pure water, what is the solubility in grams per liter (g/L)? (Suggestion: Write the dissolving equation and Ksp expression for BiI3 before starting this problem.) a. 3.1 x 10-7 g/L b. 7.8 x 10-3 g/L c. 1.0 x 10-2 g/L d. 1.3 x 10-2 g/L e. 1.8 x 10-2 g/L   Tables.pdf Periodic Table with New Elements.pdf

What [PO43-] is required to just begin precipitation of Zn3(PO4)2 (s) from a solution of 0.2 M Zn2+ (aq)? (Suggestion: Write the dissolving equation and Ksp expression for Zn3(PO4)2 before starting this problem.) a. 1.1 x 10 -30 M b. 2.1 x 10 -16 M c. 1.1 x 10 -15 M d. 5.3 x 10 -16 M e. 1.0 x 10 -16 M   Tables.pdf Periodic Table with New Elements.pdf

Use your CHM-132 Tables to calculate the Kb of ClO- .   a. 3.0 x 10-8 b. 3.3 x 10-7 c. 3.0 x 106 d. 3.0 x 10-22 e.  3.3 x 107

Determine the coordination number of Fe in the complex [Fe(en)2Cl2]+ , and then answer the following  question. What is the most likely molecular geometry of [Fe(en)2Cl2]+ ? a. linear b. tetrahedral c. square planar d. octahedral e. trigonal planar   Tables.pdf Periodic Table with New Elements.pdf

What is the solubility (in mol/L) of AgCl(s) in a solution that contains 0.05 M AgNO3 (aq)? (Suggestion: Write the dissolving equation and Ksp expression for AgCl before starting this problem.) a. 3.6 x 10-9 mol/L b. 1.3 x 10-5 mol/L c. 3.2 x 10-20 mol/L d. 2.8 x 108 mol/L  e. 143 mol/L   Tables.pdf Periodic Table with New Elements.pdf

Consider the following data for the reaction: A → products [A] Rate 0.02 M 6.91 x 10-4 M/min 0.05 1.73 x 10-3 0.12 4.15 x 10-3 What is the rate law? (Suggestion: first determine the order by the ratio technique.) a. Rate = k[A] b. Rate = k/[A] c. Rate = k d. Rate = k[A]2 e. Rate = k/[A]2   Tables.pdf Periodic Table with New Elements.pdf

What is the solubility of BiI3 (s) (in g/L) in a solution that contains 0.24 M Bi3+ (aq)? a. 8.8 x 10-4 g/L b. 2.9 x 10-4 g/L c. 6.6 x 10-16 g/L d. 5.0 x 10-7 g/L e. 2.0 x 10-15 g/L   Tables.pdf Periodic Table with New Elements.pdf

A buffer is prepared by dissolving HF and NaF in water.  Which of the following is the net ionic equation describing how the buffer neutralizes an acid (H+ ) that is added to the buffer?  a. H+ + OH- → H2Ob. H+ + NaF → Na+ + HF  c. H+ + HF → H2F+d. H+ + H2O → H3O+e. H+ + F- → HF