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Problem- 1) What is the solubility of lead chloride (PbCl2) in 0.505 M NaCl (aq)? The Ksp of PbCl2 = 2.4 x 10-4.
2) If 0.20 M NaOH was added dropwise to a solution containing 0.35 M Ca(NO3)2 and 0.50 M Fe(NO3)2, which would precipitate first, Ca(OH)2 or Fe(OH)2 ? The Ksp of Ca(OH)2 = 8 x 10-6 and the Ksp of Fe(OH)2 = 1.6 x 10-14. Justify your answer by giving the maximum hydroxide concentration for both Ca2+ and Fe2+ before precipitation would begin. Be sure to show your work.
Illustrate all work utilize additional paper if required.
What concentration of acetate ion should be present in 0.100 M acetic acid to produce a buffer solution with pH 4.00?
Pheromones are compounds secreted by the females of many insect species to attract males. One of these compounds contains 80.78 percent C, 13.56 percent H, and 5.66 percent O. A solution of 1.00 g of this pheromone in 8.50 g of benzene freezes at ..
Compute the number of moles of each reactant. Find out the limiting reactant in each of the following three reactions.
what does the sign of the standard reduction potential indicate? what does the magnitude of the standard reduction
Calculate the pH during the titration of 24.8 mL of 0.736 M HBr(aq) with 0.185 M KOH(aq) after 14.1 mL of the base have been added
given the equation at a particular temperature k 1.6 acute 104. if you mixed 5.0 mol b 0.10 mol c and 0.0010 mol a in
question a hot air balloon has a volume of 4.00 x 105 l at 30 deg. c and pressure of 748 mmhg. if the avg molar mass of
how long does it take a person at rest to breathe one mole of air if the person breathes 78.0 mls of air that is
Atoms of an unknown element have the following masses and percent abundance: 90.92% of the atoms have a mass of 19.988 u, 0.26% of the atoms have a mass of 20.983 u, and 8.82% of atoms have a mass of 21.978 u.
22.5ml of .383 molar H2SO4 is required to completely neutralize 20ml of KOH solution. What is the molarity of the KOH solution?
a sample of naphthalene which should be pure white was found to have a grayish color after the usual purification
A 20.00mL sample of H3Y was titrated with 0.1000 M NaOH. The first equivalence point was reached after the addition of 14.98mL of base. The second equivalence point was reached after the addition of 30.03mL.
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