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An uncharacterized compound Z is thought to have an amino group with a pKa of 10.0 and another ionizable group with a pKa between 4 and 7. When 20 mL of .25 M HCl is added to 50 mL of .1 M solution of Z at pH 10.0, the pH decreases to 5.2. Calculate the pKa of the second ionizable group of Z?
Calculate ΔG for the reaction if the partial pressures of the initial mixture are PPCl5 = 0.0029 atm, PPCl3 = 0.27 atm, and PCl2 = 0.40 atm PCl5(g)--> PCl3(g) + Cl2(g)
Determine how many moles of Trisodium phosphate would be required to react with 4.0mol of Silver Nitrate?
A solution is prepared at 25 degrees Celsius between 150 mL of 0.15 M C6H5COOH and 12.5 grams of C6H5COONa. What is the resultion pH of the solution, assuming no volume change.
Determine the phase composition and temperature when equilibrium is reestablished?
A proton in a linear accelerator has a de Broglie wavelength of 155 pm. what is the speed of the proton?
How to Name and Define Acids, How can you know that HNO3 is nitric acid and HNO2 is nitrous acid? How do you know the difference in endings?
How many moles of nitrate ions are present in a sample that contains 4.82 moles of chromium(III) nitrate, Cr(NO3)3
calculate the standard reduction potential of Joaquium. Write reaction in cell notation form.
What is the molarity of a sodium hydroxide solution if 25.0 mL of this solution reacts exactly with 22.30 mL of 0.253 M sulfuric acid?
what is the relationship between the dipole moment and the bond moment? how is it possible for a molecule to have bond
At 295 K, Keq = 7.0 x 10-2 for the following equilibrium: NH4HS(s) ? NH3(g) + H2S(g) What is the equilibrium partial pressure (in atm) of H2S.
Determine the ΔH solution for this compound If the heat of solvation for this compound = -30.8 kJ/mol , crystal lattice energy = -62.2 kJ/mol.
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