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Two buffers ,(X) and (Y) of pH 4.0 and 6.0 respectively are prepared from acid HA and the salt NaA. Both the buffers are 0.5M in HA.What would be the PH of the solution obtained by mixing equal volumes of the two buffers?
suppose you have an aqueous solution contains 158.2 g koh per liter its density is 1.13gcm3. you want to prepare a
A gas occupies a volume of 2.45 L at a pressure of 1.03 atm and a temperature of 293K. What volume will the gas occupy if the pressure changes to 0,980 atm and the temperature remains unchanged?
the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 18.4 g of biphenyl in 28.0 g of benzene?
For the 0.01 M NaOH and 0.001 M NaOH solutions in Part A, do your calculated values of [OH-] agree with those you would predict using the dilution equation. M1V1=M2V2, where M1= the calculated [OH-] of the 0.1 M NaOH stock solution.
starting with an aqueous solution of 75ml of 0.35m naocl kb 2.8x10-7 determine the observed ph of the solution at the
Locate spectral parameters (g values, proton and nitrogen hyperfine coupling constants, solvent) for the product of the reaction between N-benzylidene-tert-butylamine N-oxide (the radical trap) and both dibenzoylperoxide and azobisisobutyronitrile..
Calculate how many atoms of potassium A three mole sample of K2S would have and Calculate the current for diffusion-controlled electrolysis
The vapour pressure of a solvent is the amount of gaseous molecules over an open vessel of the solvent. A 50/50 mixture of benzene and toluene has 46.7 Torr of benzene and 13.5 Torr of toluene at STP. What is the pressure of air over this mixture
Explain If 1 M H2SO4 is used to titrate a 290.0 mL solution of 0.84 M ammonia (NH3), define what volume of acid is required to completely neutralize the base. Each mole of the strong diprotic acid produces two moles of hydronium ions in water.
Dicate whether the substance exists in aqueous solution (a) entirely in molecular form, (b) entirely as ions, (c) or as a mixture of molecules and ions.
The specific heat of a certain type of cooking oil is 1.75 J/(g·°C). How much heat energy is needed to raise the temperature of 2.69 kg of this oil from 23 °C to 191 °C
Compute the molar solubility of lead (II) chloride in a solution of 0.55 M NaCl. The solubility product for lead (II) chloride 1.7 x 10 -5.
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