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A common reaction is when two polyatomic ions or compounds of the same element in water combine to form a single chemical with an intermediate oxidation state - this called a comportionation reaction. Balance each of the following comportionation reactions involving sulfur oxides in acidic or basic aqueous solutions. Use the method of half-reactions and be certain to check your final answer to see if it is indeed balanced.
H2S + S2O32- pH=0 S
What is the final pH if .2 mol HCL is added to .5L of a buffer solution formulated using .28 M NH3 and .22 M NH4CL?
A 100.0-g sample of water at 27.0oC is poured into a 75.0-g sample of water at 89.0oC. What will be the final temperature of the water?
the freezing point of the solution is lowered by 5.71 °C. The freezing point and Kf constant for cyclohexane can be found here. Calculate the molar mass of menthol.
To calculate the number of molecules of a gas using ideal gas law and Avogadro's number - How many ozone molecules are present in 1.0 L of air under these conditions?
Give Structures- Indentify unknown organic liquids, An unknown organic liquid, A, was found to burn with yellow, sooty flame and give a positive Lucas test (about 5 min). Upon treatment with sodium dichromate-sulfuric acid solution it produced Comp..
What is the pH of a buffer that results when 0.50 mole of Na3PO4 is mixed with 0.75 mole of HCl and diluted with water to 1.00 L? The acid dissociation constants for phosphoric acid
Determine how much Ammonia would be formed if 187 grams of calcium carbonate CaCO 3 are formed?
The Ka of a monoprotic weak acid is 5.81 × 10-3. What is the percent ionization of a 0.147 M solution of this acid?
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 74% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
The delta G inital for the dissociation of an aqueous solution of a weak acid at 25 degrees celcius is 14.8 kJ. What is the calue of Ka for the acid?
Elemental exonium (not a real element) consists of two major isotopes
Define the wavelength and amplitude of a wave. How are these related to the energy of the wave
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