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A mixed aqueous solution of HCl and phosphorous acid (H3PO3; Ka1 = 3.00×10-2; Ka2 = 1.66×10-7) is titrated with 0.1000-M NaOH. The first end point (cresol purple indicator) is reached after 31.96 mL of NaOH has been added. The second end point (thymol blue indicator) is reached after a total of 50.22 mL of NaOH has been added. What quantity of HCl (units of mol or mmol) was present in the initial mixture? What quantity of phosphorous acid (units of mol or mmol) was present in the initial mixture?
Calculate delta H^degree (in kilojoules per mole) for benzene,C6H6 , from the following data: 2C6H6(l)+15O2(g)---->12CO2(g)+6H2O(l), delta H^degree= -6534 kJ
Molten magnesium chloride is prepared as a working fluid for a solar power tower process in a smelting tank operating at 1000 °C. Solid MgCl2 rocks are pre-heated to 714° C and fed into the tank at a rate of 0.5 metric tons/hr. At the top of the t..
Estimate the equilibrium density of a fluid whose intermolecular potential can be described by the Lennard-Jones potential. For simplicity, assume that molecules in the fluid are arranged at the vertices of a cube (cube lattice), and that these cu..
Then 41.44 g of water, with an initial temp of 76.9 degrees celcius, was added to the calorimeter. The final temperature of the water in the calorimeter was 22.9 degrees celcius. what is the heat capacity of the calorimeter
a 55 year old women visits a popular eatery for lunch. nbspshe orders a cheese and bacon pwhich with extra cheese and
when 56.0 g calcium and 34.7 g nitrogen gas undergo a reaction that has a 88.0 yield what mass of calcium nitride
A solution of nacl in water was electrolyzed with a current of 2.50 amps for 15.0 min. How many millimeters of 0.100m hcl would be required to neutralize
Enough of a monoprotic acid is dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 6.34. Calculate the Ka for the acid.
A certain carbon-hydrogen compound contains 89.94% C by mass and the remainder is hydrogen. What is the empirical formula
It took 3.66 min with a current of 2.28 A to plate out all the silver from 0.210 L of a solution containing Ag+. What was the original concentration of Ag+ in the solution
how many grams of sulfur are needed to react completely with 246 g of mercury to form HgS
Approximate the heat of reaction for the following equation using thermodynamic tables: CuO (s) + AgNO3 (aq) ? Cu(NO3)2 (aq) + Ag2O (s) hint: Write the net ionic equation first.
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