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The % ionization of a weak acid always declines in a solution that contains the salt of the anion relative to a solution of the acid alone. For example the % dissociation of the acetic acid is less in a solution that contains sodium acetate than if the acetic acid were alone. Verify this for a 0.5 M solution of acetic acid and 0.5 M each acetic/acetate, and explain why.
Which reagent is the limiting reactant when 1.250 g Al(OH)3 and .750 g H2SO4 are allowed to react? How many moles and grams of Al2(SO4)3
Consider the titration of 40.0 mL of 0.050 M of the fully protonated form of tryptophan with 0.10 M KOH. Calculate the pH of the solution at the following points
Describe the basic steps involved in gravimetric analysis. How does this procedure help us determine the identity of a compound or the purity of a compound if its formula is known.
Calculate the amount of energy in kilojoules needed to change 117g of water ice at -10degrees Celcius to steam at 125 degrees Celcius
Calculate the volume of a .850 M KOH solution necessary to neutralize 25.00 mL of 1.500 M solutions
At 50 C, the solubility of silver chloride, AgCl is 5.2 x 10^-4 g/100mL. Calculate the Ksp at this temperature.
Given equilibrium pressure, calculate Kp, When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) f/r2NH3(g)+CO2(g)
Consider the fusion of boron 10 with an alpha particle. The products of the fusion are carbon and a proton. a) Write a nuclear reaction for this process.
A gas mixture is made by combining 7.9 g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73 L.
How much of a 12.0 M HNO3 solution should you use to make 850.0 ml of a 0.250M HNO3 soution? C) How much of a 5.0 M sucrose solution should you use to make 85.0 ml of a 0.040 M solution?
The volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the new pressure in kpa if the temperature is held constant
Calculate the average speed of an oxygen gas molecule, O2, at 19.0 degrees Celsius.
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