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Draw a quantitative predominance (pH-pC) diagram for the system of 10^-4 M benzoic acid. Label the curves for each spcies and also the lines for H+ AND OH-.
A 0.200 M solution of a weak monoprotic acid HA is found to have a pH of 3.00 at room temperature. What is the ionization constant of this acid?
Although the aluminum cylinder is a solid (and, therefore, is quite in-compressible), it actually contains quite a bit of empty space.
Calculate the pH after 0.020 mol NaOH is added to 1.00 L of a solution which is 0.100 M NH2OH and 0.100 M HONH3Cl.
Calculate the molality of methanol in a solution prepared by dissolving 75.0 mL methanol, CH3OH (density = 0.791 g/mL), in 150 g ethanol.
What is the pH of a buffer system that contains 0.240 M hydrocyanic acid HCN and 0.190 M sodium cyanide NaCN? The pKa of hydrocyanic acid is 9.31.
Calculate ?H for the reaction 2C(s) + H2(g) ? C2H2(g) given the following reactions and their respective enthalpy changes
what is the pH of a solution made by mixing 30.00mL of .10M acetic acid with 40.00 mL 0f .10M KOH? Assume the volumes are additive and Ka=1.8*10^-5 for CH3CO2H
The chlorofluorocarbon CCl2F2 was once used in air conditioners as the heat transfer fluid. Its normal boiling point is 30 °C, and its enthalpy of vaporization is 165 J g-1
The mass of iron produced by the reaction of 7.00 kg of Fe2O3 and 3.00 kg of CO is 3.55 kg. What is the percent yield? (Atomic weights: Fe = 55.85, O = 16.00, C = 12.01)
100g (water) that increases temperature from -100 degrees Celsius to 200 degrees Celsius. How much energy in a Kilo Joule is absorbed?
what is the molar mass of the unknown liquid in g/mole?
Why does dropwise addition of acetophenone to a grignard reagent warrant precautions in lab?
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