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The complex ion Co(H2O)6(2+)(aq) is pink when placed in solution. Addition of chlorine ions creates an equilibrium with CoCl6(4-) in the solution, which is blue in color.
a. write the balanced reaction for the equilibrium. if CoCl6(4-) solubility is endothermix, predict what will happen to the solution color of the solution is heated.
b. what will happen if the soution is cooled?
What is the pH at the equivalence point when 20.0 mL of 0.20 M CH3NH2 is titrated with 0.40 M HCl? Kb = 4.4 × 10G4 for CH3NH2.
Determine the boiling point of a 1.5m aqueous solution of fructose.
What is the maximum amount of solid NaCl will dissolve in 1 liter of a 1 M solution with a 1:1 ration of MgCl2 and CaCl2
What is the mechanism (complete with electrons and arrows) of the dehydration
A mixture of 0.152 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0L vessal at 500K, producing a mixture of Co and CO2. The total pressure is 0.6879 atm. What is the partial pressure of CO?
Provide the reagents necessary for the following syntheses. More than one step may be required. (a) (b) (c) (d) (e) (f)
Copper metal is dipped into a 0.01M silver nitrate solution. Calculate the concentration of silver ions in the final equilibrium solution.
Synthesis of Dibenzalacetone from Bezaldehyde and Acetone, Reacting Benzaldehyde with acetone to yield Dibenzalacetone.
Which molecular species would be necessary for the formation of the product in the reaction; a primary carbocation, a tertiary carbocation, a primary carbanion, a secondary carbanion or SO4?
a buffer solution was made to have 1.4M HF and 1.10 M NaF. If .1 moles of NaOH are added to 1.00 L of the buffer, what will be the pH? Assume the volume remains constant. Ka of HF = 7.2E-4.
What volume (in liters) of 1.10 M KOH solution should be added to a 0.090 L solution containing 10.2 g of glutamic acid hydrochloride (Glu, FW=183.59
Benzoic acid dissociates in water: C6H5COOH + H2O ==== H+ and C6H5COO- The pKa of this reaction is 4.2. In a 0.53 M solution of benzoic acid, what percentage of the molecules are ionized
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