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a. For a weak acid with a pKa of 6.0, show how you would calculate the ratio of acid to salt at pH 5.
b. Suppose you have just added 100 mL of a solution containing 0.5 mol of acetic acid per liter to 400 mL of 0.5 M NaOH. What is the final pH?
Calculate the [H3O+] concentration in 0.45 M solution of barbituric acid, HC4H3N2O3. Ka for barbituric acid is 1.0 X10 ^-5.
the combustion of how many moles of ethane would be required to heat
Imagine that you have a 5.00L gas tank and a 4.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
Draw the major organic product from the reaction of 2-(carboxymethyl)benzoic acid with acetic
Write the expressions for Kc for the following reactions. a. 2O3(g) --> 3O2(g) b. Ti(s) + 2Cl2(g) --> TiCl4(l) c. 2C2H4(g) + 2H2(g) --> 2C2H6(g) + O2(g)
You have measured the absorbance for a vitamin sample to be 1.2 at a wavelength of 264. Can you use this reading to determine the INITIAL CONCENTRATION of your vitamin sample?
The equilibrium constant Kc for this reaction is greater than one. based on this information, which of the following statements is correct. A- anion is a stronger acid than HB.
the idea of using the pressure at the bottom of the naoh tank to drive the flow of NAOH to where it will join the HCL
A sample of gas occupies 2.78 x 103 mL at 25oC and 760 mm Hg. What volume will the gas sample occupy at the same temperature and 475 mm Hg?
The specific heat capacities of Fe(s) and water are 0.45 J/g? and 4.184 J/g?, respectively. What is the final temperature of the system?
Draw resonance structures for 9-(hydroxymethyl)anthracene. Is it possible for all three rings to simultaneously have bensenoid
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion, the temperature of the water is 26.55 C.
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