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Question- Calculate the pH at the equivalence point for the titration of 0.20 M aniline (C6H5NH2) with 0.20 M HCl. (Kb for aniline = 3.8 x 10^(-10))
This is question in which I am fraught on please provide me expert help me
In the titration of a weak base (0.100 M piperazine, 40 mL) with a strong acid (0.100 M HCl). Calculate the pH values between 0 mL Va and 100 mL in 10 mL steps. The two Ka values of piperazine are 4.65 x 10^-6 and 1.86 x 10^-10
Consider two samples of liquid: one mole of water H2O and one mole of ethanol C2H5OH. The density of water is 1.0 g/mL, and the density of ethanol is 0.785 g/mL. Answer each of the following questions by selecting the correct choice.
The following mixture was prepared in a reactor at 460°C. [SO2] = 0.0200 M; [NO2] = 0.0200 M; [NO] = 0.100 M; [SO3] = 0.100 M What will the concentrations of the four gases be when equilibrium is reached? Matching pairs [SO2] [NO2] [NO] [SO3]
If 18mL of oxygen are collected over water at 27 degrees Celcius and 740 mm Hg of pressure, what volume will the dry gas have at STP?(The vapor pressure of water at 27 degrees celcius is 26.7 mm Hg)
Define the nickle II ion concentration in the voltaic cell under standard conditions if the cell potential is 0.34 V at 25 degrees Celsius Zn(s) Zn2+(1.00 M) Ni2+ (aq) Ni(s)
what is the purpose of a buffer system? b)what is the purpose of NaNO2 in the buffer? c)how does the buffer react when some H3O^+ is added? d)how does the buffer react when some OH^- is added?
The lid is tightly sealed on a rigid flask containing 3.50 L H2 at 17 °C and 0.913 atm. If the flask is heated to 71 °C, what is the pressure in the flask?
Showing only Valence electrons, write an equation for the reaction that occurs between sodium, Na
A compound with the molecular weight of 391.98 was determined to be 3.1 % Hydrogen, 31.5 % Phosphorous, and 65.4% Oxygen.
A mixture of 0.200 mol of CO2, 0.100 mol of H2 and 0.160 mol of water is placed in a 2.00 L container. The following equilibrium is established at 500 K: Calculate the initial partial pressures of CO2,H2, and H2O
1.770 g of a solid white acid are dissolved in water and completely neutralized by the addition of 36.96 ml of 0.437 m
Experiments have shown that the average frequency of chirping by a snowy tree cricket depends on temperature as shown below
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