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A buffer was prepared by dissolving 2.26 grams of phenylacetic acid (HC6H5CH2CO2, Ka = 4.9x10-5) and 3.25 grams of potassium phenylacetate (KC6H5CH2CO2) in enough water to yield 750. mL of buffer solution.
a. What is the approximate pH of this buffer? Explain your answer.
b. What is the pH of this buffer solution?
c. What will the pH of this solution be when 7.5 mL of 1.0 M HCl is added
What volume of hydrogen gas at STP is required for the complete reaction of 50.0 g of nitrogen in the following reaction? N2(g) + 3 H2(g) ? 2 NH3(g)
Write the balanced molecular, total ionic and net equations and names of the ionic compounds expected from the double replacement reaction of potassium phosphate and molybdenum(VI) chloride.
calculate the difference between the Gibbs free energy and Helmholtz free energy for this reaction at normal temperatures and pressures.
What is the specific heat capacity (in SI unit) of the following.
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Draw structural formulas for the following compounds, and mark any chiral centers (asymmetric carbons) with an asterisk: l-bromobutane, 2- bromobutane
What is the pH of an acetic acid-potassium acetate buffer if the salt concentration is 40% higher than that of the acid
Draw the skeletal structure of the organic species containing the carbonyl functionality needed to form 3-ethyl-1-pentanol upon metal-catalyzed hydrogenation.
How many moles of carbon, hydrogen, & oxygen are present in a 100g sample of ascorbic acid? Ascorbic acid (vitamin C) contains 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen by mass. Assume a 100 g sample of ascorbic acid.
Regiochemistry and stereochemistry in diels-alder reactions, How does one predict which regioisomer forms as the major product when more than one product can form? How does the dienophile affect the stereochemistry of the product?
Identify which sets of quantum numbers are valid for an electron. Each set is ordered (n,\ell,m_\ell,m_s).
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