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At equilibrium the concentration of an acid in solution is 2.50mM, the pH of that solution is 4.25. Assuming that there are no other proton sources other than the acid itself, what is the base dissociation constant for that acid?
Why in this work-up procedure is ordinary not anhydrous ether used for rinsing the reaction. ask and to provide a satisfactory volume for the extraction.
question 1 the variation of emf for the cell below with temperature is shown in the graph below.nbspzns zncl2 aqueous
Calculate the entropy of mixing if two moles of N2(g) are mixed with one mole O2(g) at the same temperature and pressure, assuming ideal behavior.
A sample of nitrogen gas in a 4.4-L container at a temperature of 35°C exerts a pressure of 3.7 atm. Calculate the number of moles of gas in the sample.
if 19.65mL of .145M nitric acid is required ti neutralize 50.0mL of barium hydroxide what is the molar concentration of the base? 2HNO3+Ba(OH)2-->Ba(NO3)2+2H2O
A beaker with 100 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 6.50 mL of a 0.260 M HCl solution to the beaker. How much will the p..
calculate the weight and number average molecular weights as a function of conversion for the linear polycondensation
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) ->2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
Determine the mass, of: a.30.0 mL of the liquid propylene glycol, a moisturizing agent for foods,
A hypothetical lake has a surface area of 23 acres and an avgage depth of 20 ft. Recently there was an accident where a truck spilled 9,000 gals of concentrated H2SO4 (18M) directly into the lake.
Why is it that F2gas chemistry cannot be done in normal laboratory glassware?
The acidic anion reacts with strong bases according to the following net ionic equation HC8H4O4-(aq) + OH- (aq)--->C8H4O4-2(aq) + H2O(l) If a 0.902g sample of KHC8H4O4 is dissolved n water and titrated to the equivalence point, with 26.45 mL of Na..
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