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Chemistry
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ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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When the reaction A + B ⇌ C is at equilibrium, the concentrations of reactants are as follows: [A] = 2 mM, [B] = 3 mM, and [C] = 9 mM. What is the standard free energy change for the reaction?
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- Consider the following equilibrium: 2NOC1 (g) 2NO(g) + Cl₂ (g) AG=41. KJ Now suppose a reaction vessel is filled with 3.76 atm of nitrosyl chloride (NOC1) and 6.26 atm of nitrogen monoxide (NO) at 1161. °C. Answer the following questions about this system: Under these conditions, will the pressure of NO tend to rise or fall? Is it possible to reverse this tendency by adding C1₂? In other words, if you said the pressure of NO will tend to rise, can that be changed to a tendency to fall by adding C1₂? Similarly, if you said the pressure of NO will tend to fall, can that be changed to a tendency to rise by adding Cl₂? If you said the tendency can be reversed in the second question, calculate the minimum pressure of C12 needed to reverse it. Round your answer to 2 significant digits. OO rise fall yes no atm x10 X Śarrow_forwardThe elementary reaction 2 H, O(g) = 2 H, (g) + O,(g) proceeds at a certain temperature until the partial pressures of H, O, H,, and O, reach 0.0350 atm, 0.00550 atm, and 0.00700 atm, respectively. What is the value of the equilibrium constant at this temperature? K, =arrow_forward1) Given the following reaction at 298K: 2POF3(g) ⇌ 2PF3(g)+O2(g) ΔG°rxn=+537.8 kJ/mole A) Calculate the value for K. B) When the reaction reaches equilibrium, rank the species (POF3, PF3 and O2) in order from least to greatestconcentration.arrow_forward
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- Consider the following reaction at equilibrium: 2NO₂(g) ⇌ N₂O₄(g) The ∆H° for this reaction is < 0. If the volume of the container is decreased by ½ while the temperature is kept constant, how will K(eq) change?arrow_forwardMethane and water react to form hydrogen and carbon monoxide, like this: CH4(g) + H₂O(g) → 3 H₂(g) + CO(g) The reaction is endothermic. Suppose a mixture of CH4, H₂O, H₂ and CO has come to equilibrium in a closed reaction vessel. Predict what change, if perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. any, the perturbation change in composition The temperature is raised. The pressure of CH4 will The temperature is lowered. The pressure of H₂ will ? ? ↑ î shift in equilibrium O X to the right to the left (none) to the right to the left (none) Śarrow_forwardThe equilibrium constant, Kp, for the following reaction is 1.57 at 600 K.CO(g) + Cl2(g) COCl2(g)If ΔH° for this reaction is -108 kJ, what is the value of Kp at 699 K?Kp =arrow_forward
- We start with a sample of pure A(g). The following equilibrium is established 2 A(g) <---> B(g) + C(g) The total pressure is 8.33 atm and the temperature is 25.0oC. The partial pressure of A(g) is 5.26 atm. Calculate the value of the standard free enthalpy change (in kJ) of this reaction at 25.0oC.arrow_forwardConsider the equilibrium,BaSO4 (s) ⇌ Ba2+ (aq) + SO42- (aq) for which ΔH > 0.How will heating the mixture affect an equilibrium reaction?arrow_forward
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