Calculate the molality of urea in the solution
At 27 degrees celsius, the vapor pressure of pure water is 23.76 mmHg and that of an aqueous solution of urea is 22.99 mmHg. Calculate the molality of urea in the solution.
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3 Physical Chemistry Questions
What is the pH of a 10-5 M Co(ClO4)2 solution? Check your answer to be certain that Ca(OH)2(S) will not precipitate. (Assume no carbonate is present). The following are for the hydroxyl complexes: log ß1=3.8; log ß2=9.2; lo
Exactly 56 grams of sodium sulfate, 51 grams of potassium iodide, and 48 grams of barium perchlorate were dissolved in 500 mL of water. What is the mole fraction of the potassium iodide?
What is the pH during the titration of 25.00mL of 0.10M HAc(aq) using .10M NaOH(aq) as the titrant, after the addition of 10.0, 25.0, and 30.0ml of titrant.
Some water was added to the initial reaction mixture in the procedure you performed. a. How might the yield of 1-bromobutane be affected if the water were not added, and what product(s) would be favored
0.25 mols of an unknown acid is dissolved in enough water to make 1 Liter of solution. The pH of the solution is 2.19. Determine the ka of the acid from this data.
Use the Henderson-Hasselbalch equation to calculate the pH of each solution: a solution that is 0.140 in propanoic acid and 0.125 in potassium propanoate.
How many grams of NaH2PO4 are needed to react with 43.74 mL of 0.285 M NaOH by the following reaction- NaH2PO4(s) + 2 NaOH(aq) --> Na3PO4(aq) + 2 H2O(l)
At a given temperature, the equilibrium constant (Kp) for the decomposition of dinitrogen tetraoxide to nitrogen dioxide is 0.172. If 0.224 atm N2O4 is sealed in a flask, what partial pressure of NO2 will exist at equilibrium?
Calculate the molalities of the following aqueous solutions.
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