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What is the pH of a one liter mixture of .15 M nitrous acid and .20 M sodium nitrite after .020 mol of HCl have been added (no change in volume). (Ka for nitrous acid is 4.0x10^-4.
The method used in this experiment is sometimes called the vapor density method. Beginning with ideal gas equation, show how the density of a vapor may be determined by this method.
Write a ratio that compares the rate of diffusion for carbon monoxide gas to the rate of diffusion of oxygen gas.
Calculate the theoretical ph of one of your buffer at 0^0 C. Assume that room temperature is 22^0 C. If none of your buffer is listed on the table of changing pka with temperature, do this problem for TRIS at ph 8.0.
give the structural formula of the organic products formed (if any) when (a) ethanal and (b) propanone are treated with:
A 25.0 mL sample of an HCl solution is titrated with a 0.139 M NaOH solution. The equivalence point is reached when 15.4 mL of base is added. What was the concentration of the HCl in solution in M?
calculate the mass of vapour present in a room of volume 250 meter cube that contains air at 23 degree centigrade on a day when the relative humidity is 53 per cent.
The Ksp value for Copper (II) Iodide , Cu(IO3)2 is 1.4 x 10^-7 at 25 C calculate its solubility at this temperature.
1.given that the density of a solution of h2so4 is 1.1548 then calculate the molality of a 1.94 wt solution of
The third law of thermodynamics relates the entropy (randomness) of matter to its absolute temperature. Which of the following statements are in agreement with the third law of thermodynamics. Check all that apply. Check all that apply. At absolut..
The below table lists pressure and volume measurements for air in a cylindrical piston of an air compressor. The variables may be assumed related by: PV^k=C
Consider an insulated system containing 150 g of liquid water and 150 g of ice at equilibrium under atmospheric pressure. A total of 22 g of steam at 120±C is admitted to the system.
the reaction is commenced with initial concentrations a 0.2 m b 0.2 m and c 0.2 m. in what direction does the
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