Diprotonated EDTA (ethylenediaminetetraacetic acid) is hexaprotic (H₆Y²⁺) with the following step-wise acid dissociation constants.

K₁  = 1.0

K₂  = 3.2×10^-2

K₃  = 1.0×10^-2

K₄  = 2.0×10^-3

K₅  = 7.4×10^-7

K₆  = 4.3×10^-11

a) Use these values to compute α_Y^4- in a solution at pH 9.26.

b) Now, consider the complex formation reaction:

Sr²⁺ + Y⁴⁻ ⇌ SrY²⁻  logK_f = 8.72

What is the conditional formation constant for SrY²⁻ at pH 9.26?

c) What is the concentration of free Sr²⁺ in 0.050 M Na₂[Sr(EDTA)] at pH 9.26?

Consider the following galvanic cell with 0.10 M concentrations. The cathode beaker has Ag^+ and NO3^- ions in it. THere is an Ag rod inside it. THe anode beaker has Cu^2+ and SO4^2- in it. There is a Cu bar inside it. K^+ and NO3^- are in the salt bridge. Does cell potential increase,decrease, or remain the same when each of the following changes is made? a) 0.10 M NaCl is added to the cathode compartment. b) 0.10 M NaCl is added to the anode compartment. c) 1.0 M NH3 is added to the cathode compartment. d) 1.0 M NH3 is added to the anode compartment.

You are given 60 mL of 0.50 M acetic acid/acetate buffer to test. The starting composition of the two major species are:

Concentration of CH3COOH: 0.300 M

Concentration of CH3COO-: 0.200 M

a) You add 1.0 mL of 1.00 M HCl to the buffer. Calculate the molarity of H3O+ added as HCl, and the final molarities of acetic acid and acetate ion at equilibrium. What is the new value of the pH?

b) Now take a fresh 60 mL of the buffer and add 1.0 mL of 1.00 M NaOH. Using steps similar to those above, calculate the new pH of the solution.

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants.
2Li(s)+Cl2(g)→2LiCl(s)

(Please show typed out problem solving. I'm trying to get a grasp of how this works, and I have a hard time reading the hand-written answers,.) Thank you!

Part A

1.0 gLi; 1.0 gCl2

Express your answer as a chemical formula.

Part B

10.5 gLi; 37.2 gCl2

Express your answer as a chemical formula.

Part C

2.85×103gLi; 6.79×103gCl2

Express your answer as a chemical formula.

Q4. A positive charge q₁ = 1.0 nC is located at origin, another negative charge q₂ = -16 nC is location at (20 cm, 0). At which location/locations along the x-axis is the net electric field is zero? Draw a diagram and clearly show all the work.

Q5. A positive charge q₁ = 1.0 nC is located at origin, another positive charge q₂ = 16 nC is location at (20 cm, 0). At which location/locations along the x-axis is the net electric field is zero? Draw a diagram and clearly show all the work.

-What is Purchasing power parity (PPP)?

2-When are currencies overvalued or undervalued?
3-How is the PPP calculated?
4-Why is the PPP important in international business?
5-Using the data below,

a) Find the implied PPP for the Euro Area,

b) Is the Euro under or overvalued against the dollar? and by how much? (must show your calculations for credit)

Big Mac Price USA: $5.28
Big Mac Price EU: 3.95 €

Q4. A positive charge q₁ = 1.0 nC is located at origin, another negative charge q₂ = -16 nC is location at (20 cm, 0). At which location/locations along the x-axis is the net electric field is zero? Draw a diagram and clearly show all the work.

Q5. A positive charge q₁ = 1.0 nC is located at origin, another positive charge q₂ = 16 nC is location at (20 cm, 0). At which location/locations along the x-axis is the net electric field is zero? Draw a diagram and clearly show all the work.

Suppose your firm has decided to use a divisional WACC approach to analyze projects. The firm currently has four divisions, A through D, with average betas for each division of 0.5, 1.0, 1.2, and 1.5, respectively. Assume all current and future projects will be financed with 50 debt and 50 equity, the current cost of equity (based on an average firm beta of 1.0 and a current risk-free rate of 7 percent) is 14 percent and the after-tax yield on the company’s bonds is 9 percent. What will the WACCs be for each division? (Round your answers to 2 decimal places.)

You prepare a 0.200M solution of a monoprotic buffer at pH 7.22. The pKa of this buffer is 7.53 at room temperature.

a. What is the molarity of the acid and conjugate base necessary to make the buffer. [HA]=? [A-]=?

b. A separate 1.0 M stock solution of the acid and conjugate base is made/ How many mL of each will you use to prepare 1.0 L of the buffer in part a? mL of HA=? mL of A-=?

c. You add 29mL of 2.3 M NaOH to your 1.0L of buffer. Is the buffer capacity able to adequately handle this new addition of NaOH? What will be your new pH?

Suppose you are the following data on prices and quantities transacted:

If the economy produced all three (and only these three) goods, compute the nominal GDP in both periods and real GDP at 2006 prices. What is the rate of inflation in 2007, as measured by the change in the GDP deflator?

Suppose a CPI is constructed using weights corresponding to quantities produced in 2006. What is the rate inflation measured by the CPI?