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Chemical Equilibrium

PKa and equilibrium constant values

I have the following problem: the pKa values for H2SeO3 at 25 degrees C are 2.64 and 8.27. Write the base hydrolysis equilibrium equations for SeO3^2-(aq) and HSeO3 ^- (aq) ions, and calculate the equlibrium constant values for each equilibrium. I think that I am completely stuck on how to approach this equation. Please hel

Molarity and Equilibrium

A sodium hydroxide solution was standardized by weighing 2.425 g of oxalic acid, H2C2O4*2H2o and diluting it to 250 mL in a volumetric flask. Then 25.0 mL of this acid solution was titrated with 30.20 mL of base. Based on this information, how do I calculate the molarity of the sodium hydroxide solution?

Solving Equilibrium

Question: 4HCl + O2 > 2Cl2 + 2H2O HCl is at 2.30 atm, O2 is at 1.00 atm and they both react at 750 K. Equilibrium pressure of Cl2 is .93 atm. How do you go about finding the Kp at 750 K?

Specific rotation of glucose molecule (anomers)

Q1. ?-D-Galactopyranose has [?]D = +150.7o, and ?-D-galactopyranose has [?]D = +52.8o. When either of them is dissolved in water and allowed to reach equilibrium, the specific rotation of the solution will be +80.2o. What are the percentages of each anomer at equilibrium? (Original formatted question attached.) I reall

Equilibrium Concentrations

The equilibrium constant of the reaction A <--> 2B + C shown in Figure 9.3 (attached file) is 25.6 mol^2/L^2 at an unspecified temperature. The equilibrium concentrations in this system are [A]= 0.110 M, [B]= 1.78 M and [C]= 0.890 M. The reaction system is slugged with an additional amount of reactant, equal to a concentration o

Chemical-Reaction Equilibria: Molar Ratio Calculations

Please see the attached file for the fully formatted problem(s). Hydrogen gas is produced by the reaction of steam with "water gas," an equimolar mixture of H2 and CO obtained by the reaction of steam with coal. A stream of "water gas" mixed with steam is passed over a catalyst to convert CO to CO2 by the reaction: H2O(g) +

Chemistry Word Problem

The Apparatus shown below consists of 3 temperature-jacketed 1.000 L bulbs connected by stopcocks. Bulb A contains a mixture of H2O(g), CO2(g), and N2(g) at 25 degrees C and a total pressure of 564 mmHg. Bulb B is empty and is held at a temperature of -70 degrees C. Bulb C is also empty and is held at a temperature of -196 degre

Find Kp and Kc given an equilibrium equation, T, and P and % dissociation.

2NOBr(g) + Br2(g) <----> 2BrNO(g) @ equilibrium. NOBr is 34% dissociated at 25degreesC and total pressure is 0.25 atm. Calculate Kp and Kc. I know how to get Kp and Kc with given # of moles @ equilibrium, but cannot figure out how to get it from the percent dissociation. I tried inputting various values that I thought wer

Concentration of an Ion in Equilibrium

The Ksp for silver iodide is 8.3 x 10^-17. What is the concentration of Ag+ in equilibrium with AgI(s) if [1-]= 1.0 x 10(^-1)M? a. 9.1 x 10(^-9)M b. 1.0 x 10(^-1)M c. 1.2 x 10(^-15)M d. 8.3 x 10(^-16)M e. 8.3 x 10(^-17)M

Finding the value of the equilibrium constant.

For the reaction below, the partial pressures of gases at equilibrium are as follows: H2=7.1x10^-5 atm, Cl2=2.5x10^-6 atm, and HCl=3.0atm. What is the value of the equilibrium constant Kp? H2(g)+Cl2(g) = 2HCl(g)

Reactions

For which of the following reactions does Kc equal Kp? a. C2H4(g)+H2(g) (equilibrium sign) C2H6(g) b. H2(g)+l2(s) (equilibrium sign) 2Hl(g) c. 2S(s)+3O2(g) (equilibrium sign) 2SO3(g) d. SO2(g)+NO2(g) (equilibrium sign) SO3(g)+NO(g) e. both answers b and d

Equilibrium Pressure in a System

Hydrogen iodide can decompose into hydrogen and iodide gases. Kp for the reaction is 0.016. If 0.350 atm of Hl(g) is sealed in a flask, what would be the total pressure of the system when equilibrium is established? a. 0.258atm b. 0.279atm c. 0.350atm d. 0.385atm e. 0.412atm

Equilibrium pressure and constant

At 25 degrees Celsius, the decomposition of dinitrogen tetraoxide has an equilibrium constant(Kp) of 0.144. If the equilibrium pressure of nitrogen dioxide is 0.298 atm, what is the pressure of dinitrogen tetraoxide? a. 2.07atm b. 0.162atm c. 0.617atm d. 0.0128atm

Initial velocity of reaction and Haldane relationship enzyme kinetics.

A reversible reaction described by the chemical equation shown below (equation one) has an equilibrium constant of 10. (S represents substrate, P represents product.) If we have a mixture containing [S]=2x10E-5 M and [P]=3x10E-5M, and we know that KmS=3x10E-5 M, Vmax (forward reaction) =2 micromole /(L min), and Vmax (reverse