4. Consider the reaction 2HBr (g)At 425°C, Keq = 4.18 x 109. If the container has 0.20atm of HBr, 0.010atm of H2 and0.010 atm of Br2, which direction will the reaction proceed? Why?Br2(g)H2(g)+2Cl (aq)Pb2+5. Consider the reaction PbCl2(s)K sp 1.17 x 105. Determine the equilibrium concentrations of Pb2 and Cl if PbCl2 isdissolved in 0.100M NaCl+(aq)=6. Using the given information to calculate the new Keq:а. 2HI (g)What is the new Keq forH2(g)H2(g)H2(g) with Keq = 12.52HI (g)H2(g)b. 2HI (g)H2(g)What is the new Keq for1/2H2(g)H2(g) with Keq = 12.5HI (g)1/2H2()с.(1) Hb(a)(2) Hb(aq)O2(aq)СО(аq) +>НЬО2(аq)НЬС Оад)КсgКeg1.8306СО (аq) +HbCO(aq)HЬО2даg) +O2(aq) Ke?+=

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Answered: 4. Consider the reaction 2HBr (g) At…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter8: Properties Of Gases

Section8.6: Gas Mixtures And Partial Pressures

Problem 8.10PSP

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Xenon and fluorine will react to form binary compounds when a mixture of these two gases is heated to 400C in a nickel reaction vessel. A 100.0-mL nickel container is filled with xenon and fluorine, giving partial pressures of 1.24 atm and 10.10 atm, respectively, at a temperature of 25C. The reaction vessel is heated to 400C to cause a reaction to occur and then cooled to a temperature at which F2 is a gas and the xenon fluoride compound produced is a nonvolatile solid. The remaining F2 gas is transferred to another 100.0-mL nickel container, where the pressure of F2 at 25C is 7.62 atm. Assuming all of the xenon has reacted, what is the formula of the product?
Consider the following reaction at 75C: 3R(s)+2Q(g)A(g)+5B(l)K=9.4 A 10.0-L sample contains 0.30 mol of R and Q and 0.50 mol of A and B. In which direction will the reaction proceed?
A 4.72-g sample of methanol (CH3OH) was placed in an otherwise empty 1.00-L flask and heated to 250.C to vaporize the methanol. Over time, the methanol vapor decomposed by the following reaction: CH3OH(g)CO(g)+2H2(g) After the system has reached equilibrium, a tiny hole is drilled in the side of the flask allowing gaseous compounds to effuse out of the flask. Measurements of the effusing gas show that it contains 33.0 times as much H2(g) as CH3OH(g). Calculate K for this reaction at 250.C.
105 The decomposition of mercury(II) thiocyanate produces an odd brown snake-like mass that is so unusual the process was once used in fireworks displays. There are actually several reactions that take place when the solid Hg(SCN)2 is ignited: 2Hg(SCN)2(s)2HgS(s)+CS2(s)+C3N4(s)CS2(s)+3O2(g)CO2(g)+2SO2(g)2C3N4(s)3(CN)2(g)+N2(g)HgS(s)+O2(g)Hg(l)+SO2(g) A 42.4-g sample of Hg(SCN)2 is placed into a 2.4-L vessel at 21°C. The vessel also contains air at a pressure of 758 torr. The container is sealed and the mixture is ignited, causing the reaction sequence above to occur. Once the reaction is complete, the container is cooled back to the original temperature of 21°C. (a) Without doing numerical calculations, predict whether the final pressure in the vessel will be greater than, less than, or equal to the initial pressure. Explain your answer. (b) Calculate the final pressure and compare your result with your prediction. (Assume that the mole fraction of O2 in air is 0.21.)
Which of the following quantities can be taken to be independent of temperature? independent of pressure? (a) H for a reaction (b) S for a reaction (c) G for a reaction (d) S for a substance
For gases, STP is A. 1 atm, 0oC B. 1 atm, 0 K C. 760 mm Hg, 0 K D. 760 mm Hg, 25oC
Water decomposes according to the following reaction: 2 H2O (g) -> O2 (g) + 2 H2 (g). If 0.050 mol of H2O completely decomposes at 298 K and a constant volume of 1.0 L, what is the pressure inside the flask after the reaction is complete
Ammonia (NH3) is a weak base. Melting point of ammonia is -78 Celsius degrees and boiling point is -33 Celsius degrees. Therefore, pure ammonia appears in gaseous form in room temperature. a) Preparation of ammonia Gaseous ammonia (NH3) can be prepared by a reaction where Hydrogen gas (H2) and Nitrogen gas (N2) reacts. Write a reaction equation to this reaction. Balance the reaction equation if needed. b) Behavior of gases Explain the diffusion of gases. c) Change of temperature The closed container filled with gaseous ammonia is moved from room temperature into a freezer. The temperature on freezer is -35 Celsius degrees. Explain shortly on your own words, what kind of changes does the cooling cause and why.

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