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Recent research on the solubility of Greenockite, a thermodynamically stable form of cadmium sulfide (CdS), reveals that mildly acidic solutions with sulfide concentrations between 10-4 and 10-3 M can effectively minimize the solubility of CdS. Determine the final pH of one liter of solution at equilibrium with CdCO3(s) after addition of 4×10-4 moles of H2S and 1×10-2 M of NaCl. The pertinent complexation reactions are (neglect any other complexation reactions):
CdS complexationlogKsp=14.36logK1=-4.73logK2=2.33logK4=6.57logK5=-16.83logK6=-6.85
CdClK1=34.7K2=4.57K3=1.26K4=0.2
Use this and information to determine the concentration of the species you expect to find in this system.
Provided a mixture of three different compounds A, B and C to perform a chromatographic experiment using TLC. Separate experiments with the pure compounds showed the Rf values of A and B
Thermochemistry and Periodic Properties of Elements. State which atom is larger according to periodic trends. Explain the difference for each of the pairs.
A container of gas at 760 mmHg and 20 degrees C is heated to 40 degrees C. What is the new pressure in mmHg?
A 25.0-mL sample of 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 10-5) is titrated with 0.100 M NaOH solution. Calculate the pH after the addition of the following amounts.
Typical lab experiment exploring le chateliers principle. HCl is added to Pb(NO3) until precipitate forms. Question asks: Explain why PbCl2 did not precipitate immediately on addition of HCl. What condition must be me by [PB2+] and [cl-] if PbCl2 i..
250g of ice at 265K is mixed with 100g of water ar 305K. Calculate the final temperature of the mixture. Assume that no energy in the form of heat is transferred to the environment. (heat of fusion=300J/g; c(ice) =2.06J/g*K, c(water)=4.184J/g*K.
Calculate the concentration of the Ca2+ in ppm (or mg/L) using the correct number of significant figures assuming the 1.0 HCl has a density of 1.000 g/mL. Show these calculations clearly in your notebook and on your report form. Recall that calciu..
Determine the number of significant digits in each number and write out the specific significant digits.
Was measured at several temperatures and the following data was collected, Using this data, graph ln k 1/T. using your graph determine the value of Ea please show work and show a graph
Important information about Molarity, You have 20 ml of 10% Bromophenol Blue (BPB). Using a 10% stock, how would you prepare 5 ml of a 0.2 % stock?
Iron is extracted from its ore using carbon. This can be represented using the following equation. Calculate the percent atom economy for pure iron.
Draw all of the resonance forms of 4-nitrobenzaldehyde which contribute to the enhanced electrophilicity of the aldehyde carbon relative to benzaldehyde
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