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The vapor pressure of pure water at 25 °C is 23.8 torr. What is the vapor pressure (torr) of water above a solution prepared by dissolving 11.5 g of glucose (a nonelectrolyte, MW = 180.0 g/mol) in 95.0 g of water?
Calculate the pH of 0.500L of a buffer solution composed of 0.20 M butyric acid (CH3(CH2)2)2COOH, Ka = 0.000015) and 0.10 M sodium butyrate, (NaCH3(CH2)2COO).
its freezing point depression constant is 8.37*C per molal. Use your corrected average temperature (5.0*C) to find the molality of the water in the alcohol. Find the percent water in the alcohol.
If 155mL of wet {grm{H}}_2 is collected over water at 24 ^circ {rm C} and a barometric pressure of 739torr , how many grams of {grm Zn} have been consumed.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Compute the pH of the solution before the addition of any HNO3. Kb of NH3 =1.8 × 10-5.
For the reaction CO(g) + H2O(g) CO2(g) + H2(g), Kp = 0.64 at 900 K. If the reaction is initiated with just H2(g) and CO2(g), each at a partial pressure of 0.540 atm, what is the partial pressure of CO(g) at equilibrium
Suppose that 1.419 g of impure barium hydroxide is dissolved in enough water to produce 213 mL of solution and that 40.4 mL of this solution is titrated to the stoichiometric point with 8.3 mL of 0.0696 M HCl(aq). What percentage of the impure sam..
whats the concentration of the acetic acid solution? If 10.91 mL of an acetic acid solution required 9.78 mL of 1.0439 M NaOH
A piece of titanium metal with unknown mass is heated in boiling water to a temp of 99C. It is removed from the boiling water and dropped into a coffee cup calorimeter containing 83.5g water.
Suppose you have a glass tube which is 1 m long and 2.5 cm in diameter. Concentrated HCl acid is placed at one end of the tube and concentrated NH3 solution is placed at the other end.
A solution of a specific vitamin has ?max = 251nm and a concentration of 4.79x10^-7M. The absorbance of the solution at 251 nm is A = 0.175. What is the molar absorptivity of the vitamin at 251nm
In a reaction between pure acetic acid and sodium bicarbonate, 26.6 grams of sodium bicarbonate was added to 12.0 mL of acetic acid. Which reactant is the limiting reactant in this reaction
what metal cations form sulfide precipitates in basic solution in qual scheme after the above cations have been removed. Qualitativley explain, why the pH of the sulifide solution effects which cations precipitate.
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