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Question- During the titration of a particular acid, the pH changed from 7.0 to 9.0 with the addition of 0.01 mL of base. An indicator was used that had a dissociation constant KI=1.0 x 10^-8. Calculate the ratio of basic to acidic forms of the indicator before and after the last 0.01 mL of base was added. Use the results of your calculation to explain why this would or would not be a good indicator for this titration, compared to the indicator described in the background section.
The indicator in the background section has a dissociation constant of 10^-9.
State your answer by means of three significant figures.
A 5.0 g sample of a hydrate of BaCl2 was heated, and only 4.3 g of the anhydrous salt remained. What percentage of water was in the hydrate?
calculate deltago in j for 2 moles of electrons in each half-reaction and a standard potential of 0.29 v.a half-cell
You have 855 ml of a solution that is composed of 15.2 grams of NH3 and 22.2 grams of Aluminum Chloride mixed well. kb for ammonia = 1.8 E -5.
a company wishes to reduce its air conditioning cost by cooling 100cubic feet of a metallic heat sink during the night
at 25 degrees Celsius, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 65 grams of glucose in 150 grams of water?
Define Ideal gas law, Calculate the free energy of mixing when 1 mole of liquid A is mixed with 4 moles of liquid B at 25 degrees C to form an ideal solution. What is the change in chemical potential of component A?
An unknown compound has the formula CxHyOz. You burn 0.220 g of the compound and isolate 0.312 g of CO2 and 0.191 g of H2O.
If it solidifies isothermally at 55 K below the equilibrium (normal) melting point of Cd, what is magnitude of the energy transferred to the plate
Would the desired reaction occure if ethanol or t-butyl alcohol were used instead of isopropyl alcohol in the attempted photochemical dimerization of benzophenone?
The following reaction is second-order with respect to NO(g) and first-order with respect to O2(g). At a given temperature, the rate constant, k, equals 7.4 Å~ 102 M-2s-1.
Determine the pressure in Standard atmospheres,Torr and mm Hg units when A gauge on compressed gas cylinder reads 1500 psi ( pounds per square inch; 1 atm =14.7 psi).
Mercury is an extremely toxic substance. Inhalation of the vapor is just as dangerous as swallowing the liquid. How many milliliters of mercury will saturate a room that is 15x12x8.0 ft with mercury vapor at 25C
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