Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- Ammonia will decompose into nitrogen and hydrogen at high temperature. An industrial chemist studying this reaction fills a 75.0 L tank with 6.2 mol of ammonia gas, and when the mixture has come to equilibrium measures the amount of hydrogen gas to be 6.5 mol. Calculate the concentration equilibrium constant for the decomposition of ammonia at the final temperature of the mixture. Round your answer to 2 significant digits. K-0 C = ☐ x10 ×arrow_forwardNitrogen dioxide is one of the many oxides of nitrogen (often collectively called "NOx") that are of interest to atmospheric chemistry. It can react with itself to form another form of NOx, dinitrogen tetroxide. A chemical engineer studying this reaction fills a 125 L tank with 47. mol of nitrogen dioxide gas. When the mixture has come to equilibrium he determines that it contains 22. mol of nitrogen dioxide gas. The engineer then adds another 16. mol of nitrogen dioxide, and allows the mixture to come to equilibrium again. Calculate the moles of dinitrogen tetroxide after equilibrium is reached the second time. Round your answer to 2 significant digits. ||mol x10arrow_forwardA sample of phosgene is sealed in a 250.0-cm³ glass bulb to which a pressure gauge is attached. The bulb is heated to 600 °C, and the gauge shows that the pressure in the bulb rises to 0.973 atm. At this temperature, the COCI₂(g) is partially dissociated into CO(g) and Cl₂(9) according to the equation CoCl₂(g) CO(g) + Cl₂(9) At 600 °C, Kp = 5.00 for this reaction. Assume that the contents of the bulb are at equilibrium and calculate the partial pressure the three different chemical species in the vessel. Pcocl₂ = Pco= Pc₂" atm atm atmarrow_forward
- At 460 °C, the reaction * NO(g) + SO3(g) SO2(g) + NO2(g) has Kc = 85.0. Suppose 0.109 mol of SO2, 0.0612 mol of NO2, 0.0755 mol of NO, and 0.118 mol SO3 are placed in a 10.0 L container at that temperature. What will the concentrations of all the gases be when the system reaches equilibrium? %3D [SO2) = M i [NO2] = M %3D [NO] = i M [SO3] = i Marrow_forwardWhich of the following statements is a true statement concerning a reaction that has reached a state of equilibrium? A system has reached equilibrium when the concentrations of reactants and products remain constant. A system has reached equilibrium when the reaction has stopped and no more products are formed. A system has reached equilibrium when the rate constant for the forward reaction equals the rate constant of the reverse reaction. A system has reached equilibrium when the concentrations of reactants and products correspond to the stoichiometric ratios determined by the balanced equation.arrow_forwardHydrogen peroxide, H₂O₂, has a density of 1.45 g/cm³ and decomposes spontaneously but slowly. The decomposition reaction will proceed at a faster rate if iodide ion, a catalyst, is added. The steps for the catalyzed reaction are: H₂O₂(aq) + (aq) → H₂O(l) + Ol-(aq) OO H₂O₂(aq) + Ol(aq) → H₂O(l) + O₂(g) +1-(aq) a. What is the net reaction? b. If 10.00 mL of H₂O₂ undergoes this reaction, what mass of oxygen is produced? c. If the reaction has an 85.5% yield, what mass of oxygen is actually produced?arrow_forward
- Consider the reaction: N2(g) + 3H2(g) 2NH3(g) where Kc = 0.500 at 400 °C. If 50.0 L reaction vessel contains 1.000 mole N₂; 3.000 mole H₂ and 0.050 mole NH3, which of the following is TRUE? The reaction based on the following parameters is in equilibrium. More ammonia will be produced as the reaction approaches equilibrium. Data provided is not enough to warrant a conclusion regarding equilibrium. More ammonia will dissociate as the reaction approaches equilibrium.arrow_forwardAt 460 °C, the reaction SO2(g) + NO2(g) = NO(g) + SO3(3) has Kc = 85.0. Suppose 0.109 mol of SO2, 0.0556 mol of NO2, 0.0764 mol of NO, and 0.124 mol SO3 are placed in a 10.0 L container at that temperature. What will the concentrations of all the gases be when the system reaches equilibrium? [SO2) = i [NO2] = i M [NO] = M [SO3] = iarrow_forwardThe reaction 2CO(g) + O2(g) = 2 CO2(g) is known to be exothermic. According to Le Chatelier's principle, how will this reaction's equilibrium be affected if the reaction temperature is increased? (A) The equilibrium constant will decrease and the reaction will shift to the left. (B) The equilibrium constant will be unchanged, but the reaction will shift to the left. (C) The equilibrium constant will increase and the reaction will shift to the right. (D) The equilibrium constant will be unchanged, but the reaction will shift to the right. (E) The equilibrium concentrations will not be affected.arrow_forward
- Consider the reaction: 2 CO(g) + O2(g)=2 CO₂(g). The reaction is allowed to reach equilibrium in a sealed vessel. According to Le Chatelier's principle, what will happen to the equilibrium, if the volume of the vessel is decreased while the temperature is kept constant? (A) The equilibrium constant will decrease and the reaction will shift to the left. (B) The equilibrium constant will be unchanged, but the reaction will shift to the left. (C) The equilibrium constant will be unchanged, but the reaction will shift to the right. (D) The equilibrium constant will increase and the reaction will shift to the right. (E) The equilibrium concentrations will not be affected.arrow_forwardMost reaction do not go to completions. Equilibrium is established between the reactants and products. For the reaction of A with B to produce C and D, we can write the chemical equation as: аА + bв + сс + dD where + represents equilibrium between the reactants and products. The extent to which the reaction proceeds to product formation, at a given temperature, is given by the equilibrium constant, Kę. The equilibrium constant is written mathematically (for the above equation) as: [C[[D]* K. = [A]°[B]" where, a, b, c, and d are the stoichiometric coefficients from the balanced chemical equation and the brackets, [ ], indicate molar concentration. 1. For the following reaction: 2A + В + 3с calculate the equilibrium constant, K, if at equilibrium the concentration of A is 0.15M, the concentration of B is 0.20M, and the concentration of C is 0.10M.arrow_forwardConsider the following reaction to form the anionic metal complex [CuCl2]- Cu+ (aq) + 2 Cl- (aq) ⇆ [CuCl2]- This reaction has an equilibrium constant value of Kc = 3.0 x 105 If the equilibrium concentration of reactants is [Cu+] = 0.014 M and [Cl-] = 0.012 M, calculate the concentration of the product, [CuCl2]- .arrow_forward
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