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278 solutions

Equilibrium Expressions

Q. The equilibrium constant, Kp, for the following reaction is 0.365 at 1150 K. 2SO2(g) + O2(g) ⇌ 2SO3(g) If ΔH° for this reaction is -198 kJ, what is the value of Kp at 1230 K?

Solved • Mar 30, 2020

Equilibrium Expressions

Q. The equilibrium constant, Kp, for the following reaction is 2.74 at 1150 K. 2SO3(g) ⇌ 2SO2(g) + O2(g) If ΔH° for this reaction is 198 kJ, what is the value of Kp at 1270 K?

Solved • Mar 30, 2020

Equilibrium Expressions

Q. Consider the reaction shown. Using your knowledge of relative acid-base strengths and equilibrium, determine what you can about the size of K c for the reaction. H3SbO4(aq) + HTeO4-(aq) <=> H2SbO4-(aq) + H2TeO4(aq) Answer: Kc < 1 I saw the work on how to get this answer from a girl who asked, but I'm confused on how you know that you compare H2TeO4 with H3SbO4 instead of HTeO4- with H2SbO4-

Solved • Mar 27, 2020

Equilibrium Expressions

Q. A student ran the following reaction in the laboratory at 641 K: CO(g) + Cl2(g) COCl2(g) When she introduced 7.34×10-2 moles of CO(g) and 9.69×10-2 moles of Cl2(g) into a 1.00 liter container, she found the equilibrium concentration of Cl2(g) to be 5.72×10-2 M. Calculate the equilibrium constant, Kc, she obtained for this reaction.

Solved • Mar 22, 2020

Equilibrium Expressions

Q. A student ran the following reaction in the laboratory at 751 K: N2(g) + 3H2(g) 2NH3(g) When she introduced 3.88×10-2 moles of N2(g) and 6.25×10-2 moles of H2(g) into a 1.00 liter container, she found the equilibrium concentration of NH3(g) to be 8.71×10-4 M. Calculate the equilibrium constant, Kc, she obtained for this reaction.

Solved • Mar 22, 2020

Equilibrium Expressions

Q. A solution of 5.00 mL of 0.00300 M Fe(NO3)3, 4.00 mL of 0.00300 M KSCN, and 3.00 mL of 1.0 M HNO3 is mixed together and allowed to reach equilibrium. The concentration of Fe(SCN)^2+ is found to be 2.72×10^-4 M at equilibrium. Calculate the equilibrium constant for this reaction.

Solved • Mar 22, 2020

Equilibrium Expressions

Q. The compound ammonia, NH3, is weak base when dissolved in water. Write the Kb expression for the weak base equilibrium that occurs in an aqueous solution of ammonia:

Solved • Mar 5, 2020