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You are given the following free energy data in kcal/mol for 25 degrees C and 1 bar total pressure. See below:Species deltaGf Species deltaGfCa2+ -132.3 CaCo3 (calcite) -270.01Mn2+ -54.5 MnCO3 (rhodocrosite) -195.2CO2-3 -126.17a) Assuming mangaoan calcite with a composition of Ca0.95Mn.05CO3 is an ideal solution, calculate its free energy of formation.
b) Write the dissolution reaction for the solid and calculate its solubility product.c) The drinking water standard for dissolved Mn2+(aq) is .05 mg/L. Assuming dissolved Ca2+=10-3.00 M and CO2-3 = 10 -5.48 M compute Mn2+(aq) at equilibrium with this solid solution. Compare this result to Mn2+(aq) at saturation with respect to pure rhodocrosite. How do both of these concentrations compare to the drinking water standard?
The net potential energy EN between two adjacent ions is sometimes represented by the expression: EN = -(C/r) + D exp(-r/p) in which r is the interionic separation and C, D, and p are constants whose values depend on the specific material.
Design an experiment to determine the density of irregular shaped object. a. Include an introduction describing the calculations that will need to be made.
A solution of 0.01M acetic acid is found to have a PH of 3.63 . Calculate the Ka for the acid
What mass of P4 is produced when 41.5 g of Ca3(PO4)2, 26.5 g of SiO2 and 7.80 g of C are reacted according to the equation: 2Ca3(PO4)2 + 6SiO2 + 10C ¼ P4 + 6CaSiO3 + 10C
explain why all the solutions iron iii nitrate and potassium thiocyanate used in this experiment were made in 0.1 m
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion, the temperature of the water is 26.55 C. How much heat is evolved per gram of fuel burned?
the electron drops down to the 3d subshell, releasing a photon in the process. how many radial nodes and how many angular nodes does each of the orbitals in part (a) have?
Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 10.82 g of ethane is mixed with 62.90 g of oxygen.
for a stadium that would be in the sun for long periods of day, excluding cost as a factor, why would you choose wood over aluminum or iron?
Explain (thermodynamics/free energy coupling) why a compound with a phosphate group whose free energy of hydrolysis is more negative can transfer phosphate to another compound to make a phosphorylated product whose free energy of hydrolysis is les..
Aqueous solutions of nickel(II) sulfate and mercury(I) nitrate react to give aqueous nickel(II) nitrate and a mercury(I) sulfate precipitate
what is the half life for this reaction B) how long will it take for the concentration of SO2Cl2 to decrease to 25 percent of its initial concentration C) if the inital concentration of SO2Cl2 is 1.00 M
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