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Presume you have 1.00L of an aqueous buffer containing 60.0mol acetic acid pka=4.76 and 40.0mol acetate.
1) Compute the pH of this buffer
2) Explain what volume of 2.00M NaOH would be required to increase the pH to 4.93?
What is the maximum amount of AlCl3
It is estimated that more than 5 billion metric tons of CO2 is added to the atmosphere each year. Assume that CO2 is an Ideal gas at 25 oC and 1 atm.
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
In moist air the lighter water molecules have a greater rms average speed than the heavier nitrogen molecules. Compute the difference in the two average speeds at 30C
Use the Clausius-Clapeyron equation to estimate the boiling point of water at 24.0.torr pressure. The average enthalpy of vaporization for water over the relevant temperature range is 42.34 kJ/mol.
How would you make a .500L of a single solution that was 0.00700 M NaCl and 0.143 M KCl? Be complete with your directions (like a recipe with amounts, glassware, etc.)
Write the mass balances for K+ and the phosphate species in a soln prepared by mixing .025mol KH2PO4 plus
Calculate the Calorimeter Constant if 25 g of water at 53C was added to 25 g of water at 25C with a resulting temperature of 35C?
Draw the carboxylic acid produced from the acid hydrolysis of butyl acetate (butyl ethanoate)
For the gas N2O calculate the number of grams are present in 1.05E4 mL under a pressure of 801 mm Hg at 56.3 oC.
The fluorocarbon C2Cl3F3 has a normal boiling point of 47.6°C. The specific heats of and C2Cl3F3(g) are 0.91 J/gK and 0.67 J/gK, respectively. The heat of vaporization of the compound is 27.49 kJ/mol.
The active ingredient in some antiperspirants is aluminum chlorohydrate, Al2(OH)5Cl. Analysis of a 2.000-g sample of antiperspirant yields 0.334 g of aluminum. What percent (by mass) of aluminum chlorohydrate is present in the antiperspirant?
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