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1. a) Determine the pH of a buffer containing equal concentrations of carbonic acid and sodium hydrogen carbonate.
b) At what pH would the buffering capacity of this buffer be exceeded?
2. What concentration of sodium acetate is required to make a solution in which the pH is 5 and the acetic acid is 0.10 mol/L?
what is the volume of co2 that can be removed using a 2.6 kg sodium peroxide cartilage? evaluate at stp. temp 0 degrees C and 1atm pressure.
Consider the circuits in Fig. with all PMOS transistors replaced with NMOS, and all NMOS by PMOS, and with ground and VDD connections interchanged. What do the output functions Y become?
How many kilograms of CaCl need to be added to 25L of ice slush to lower the melting point by 5 degrees C? Please show work. kfp=1.86
The reaction 2A+3B=C is first order with respect to A and B. When the initial concentrations are A=1.5X10^-2 M and B= 2.4X10^-3 M. The rate is 4.6 X10^-4 M/s. Calculate the rate constant of the reaction.
In the boron trifluoride etherate-catalyzed reaction of acetic anhydride and salicylic acid to produce acetylsalicylic acid, or aspirin, anhydrous conditions prevail. So, what serves as the base, as water cannot?
A sample of helium gas has a volume of 8.23 L at 258.8 K and 2.049 atm. How many helium molecules does it contain
what effect does the presence of sodium sulfite group on methyl orange have on the solubility of methyl orange in water. If this group were absent, would you expect the solubility of the resulting molecule to be more or less soluble in hexane than..
Would you choose a dilute acid (say 50 mM HCl or a dilute base (again, say 50 mM NaOH) or a buffer near neutral pH? Why? (Hint: Think about what factors govern water solubility and how pH will affect one of them.)
Problem- A rectangle of length 5.42 in., height 3.47 cm, and depth 309 mm has a mass of 147.2 ounces. What is the density of the material in grams per centimeters
neutral compound show traces of an acid as an impurity wheras the acid might not show any traces of a neutral compound?
What is the pH of a buffer solution that is 0.211 M in lactic acid and 0.111 M in sodium lactate? The Ka of lactic acid is 1.4 × 10-4.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 150.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5.
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