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Phosphorus pentachloride gives an equilibrium mixture of PCl5, PCl3, and Cl2 when heated
PCl5(g) PCl3(g) + Cl2(g)
A 1.00 L vessel contains an unknown amount of PCl5 and 0.020 mol each of PCl3 and Cl2 at equilibrium at 250?C. How many moles of PCl5 are in the vessel if Kc for this reaction is 0.0415 at 250?C.
In tables of thermodynamic data provided in chemistry books, one finds delta Hf, delta Gf, and delta S listed. Briefly explain why the entropy data are supplied as S
Determine the ionization energy (in kilojoules per mole) of a metallic element if light of wavelength 67.2 nm ejects electrons with a speed of 2165 km/sec.
Calculate delta H rxn for the reaction MnO2(s) + 2C(graphite) ---> Mn(s) +2CO(g) from the following information: Mn(s) +O2(g) ---> MnO2 delta H = -520.03 kJ 2C(graphic) + O2(g) ---> 3CO (g) delta H = -221.04 kJ
calculate the ph of a solution formed by mixing 40.0ml of 0.1000 m hcl with 39.95ml of 0.1000 m naoh and then diluting
What is the theoretical percent, by weight, of calcium in Ca(OCl)2
find the wt percent of C and H. find the smallest integer ration of C:H in the compound
Initially 5 mol of an ideal gas with Cv,m=12.5 J K^-1 mol^-1 are at a volume of 5 dm^3 and a temperature of 300K. If the gas is heated to 373 K and the volume changed to 10 dm^3, what is the entropy change
The total heat of hydrationof 1 mol of gas phase Li+ ions and Cl- ions is -865kJ. The lattice energy of LiCl(s) is 828 kJ/mol. Calculate the heat of solution of LiCl.
Explain how this system appears static but in fact is a dynamic equlibrium, Na+(aq) + Cl-(aq) --> NaCl(s), that is in constant motion though the mass of solid is constant.
what is the molar solubility of caf2 in 0.10 m naf solution at 25°c? the ksp for caf2 is 1.5 x 10^-10
what is the molarity molality weight percent and ppm of naclmw58.4 gmol when 100g of this compound is dissolved in
From this statement alone, can you conclude that the solution is acidic? If not, what additional information would you need
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