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A solution is prepared by adding some solid BaF2 to water and allowing the solid to come to equilibrium with the solution. The equilibrium constant for the reaction below is Kc = 1.3x10-6.
BaF2(s) → Ba2+(aq) + 2 F -(aq)
What is the equilibrium concentration of Ba2+ in the solution? Assume that some of the solid remains undissolved.
Give your answer in moles per litre, accurate to two significant figures. Do not include units as part of your answer. (Enter 1.23x10-5 as 1.23e-5.)
A flask contains a mixture of compounds A and B. Both compounds decompose by first-order kinetics. The half-lives are 55.0 min for A and 26.00 min for B. If the concentrations of A and B are equal initially
A solution is prepared by dissolving 13.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.00 mL sample of this stock solution is added to 57.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
Why liquids rise in the cappilary tube - explain
When 0.0190 mol gaseous NH3 and 0.0180 mol gaseous O2 are placed in a 1.00 L container at a certain temperature, the N2 concentration at equilibrium is 2.10×10-3 M. Calculate Keq for the reaction at this temperature.
Show that the function si=x*e^(-ax^2) is an eigenfunction of the operator d^2/dx^2 - 4(a^2)(x^2). What is the eigenvalue.
a highly radioactive element is determined to contain 0.3256 mol of the element. What is the element?
Problem- Ub tge titration of 25.0 mL of 0.1 Fe2+ with 0.100 MCe4+, what will be the cell potential after the addition of 25.0 mL of Ce4+ solution
Corrosion is a leading cause of structural degradation of bridges and roadways. Not only does rust weaken metal structures, but as it builds up it forces apart connecting parts of the structure, causing the structure to fail and risking public safety..
A voltaic cell consist of an electrode composed of Sn(s) in a 1.0M Sn2+ ion solution as well as another electrode composed of Zn(s) in a 1.0 M Zn2+ ion solution, connected by a salt bridge. Compute the standard potential for the voltaic cell at 29..
What is the ionic strength of a buffer? - Is a molecule always charged or uncharged?- If given the pKa of succinicacid (4.19) is it protonated or unprotonated?
What by-product is formed along with benzilic acid in this experiment? Draw a structural formula for this substance.
If oxygen gas were collected over water at 20 degrees C as well as the total pressure of the wet gas were 670 mm Hg, explain what would be the partial pressure of the oxygen
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