C10H12NO4N is a weak base and has a Kb of 1.58x10-10. One, 0.650g, is dissolved in 235mL of distilled water. a. What is the initial concentration, in units of molarity, of the zalcitabine? b. Write an expression for Kb for zalcitabine. c. What are the equilibrium concentrations of the products and reactant? d. What is the pH, pOH, and % ionization of this weak base?

C10H12NO4N is a weak base and has a Kb of 1.58x10-10. One, 0.650g, is dissolved in 235mL of distilled water. a. What is the initial concentration, in units of molarity, of the zalcitabine? b. Write an expression for Kb for zalcitabine. c. What are the equilibrium concentrations of the products and reactant? d. What is the pH, pOH, and % ionization of this weak base?

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter12: Isopentyl Acetate (banana Oil)

Section: Chapter Questions

Problem 3Q

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ILMatch each item with the correct statement below. a. integrated rate law b. Buffers c. leclanche dry cell d. differential rate law e. activation energy 47. It depicts the dependence of the rate of reaction on reaction. 48. The minimum amount amount of energy that is required by a given chemical reaction to yleld the desired product. 49. It is a solution that resists drastic changes in the pH of the solution even when an acid or a base is added. 50. It produces electricity of up to 1.5 V.
1. Which of the following will give positive test when tested with Fehling’s test? A. formaldehyde B. pentane C. acetone D. pentanone 2. The lengthening of Carbon atoms by means of C bond. A. distillation B. fractional distillation C. condensation D. titration
51. Which of the following conjugate acid/conjugate base pair serves as a buffering system in higher animals? A. +H3N-CH₂-COOH/H₂N-CH₂-COO- B. phosphate dibasic (HPO )/PO phosphate tribasic C. carbonic acid (H₂CO3)/bicarbonate (HCO3) D. succinic acid/succinate
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V. A lake water is analyzed and found to have 1.2 mg NH4*/L, at pH = 7.8. a. Using pKa and ionization fraction values (ao and a1), determine the fractions of NH4* and NH3 forms. b. Use this information, combined with the ammonium (NH4*) concentration above, to estimate the concentration of ammonia (NH3) in the lake in units of mg/L. c. The 96-hour median lethal concentration (LC50) for ammonia (NH3) for trout ranges from 0.16-1.1 mg/L. What pH would the water in the lake need to increase to, in order to reach the 0.16 mg/L threshold?
25.0 cm³ sodium hydroxide is neutralized by 15.0 cm³ sulphuric acid of concentration 0.10 mol dm-3. a. Write the equation for the reaction b. From the equation, determine how many moles of sulphuric acid will neutralize 1.0 mol of sodium hydroxide. c. Determine how many moles of sulphuric acid are used in the neutralization. d. Determine the concentration of sodium hydroxide.
please answer question 2 parts a and b. 2. 5.45 mL of 0.10 N NaOH was needed to titrate a 5.00 mL aliquot of grape juice to phenolphthalein endpoint. a. Calculate the titratable acidity as g tartaric acid/100 mL sample. b. Express the titratable acidity as a percent
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1. Describe how the technique of back titration could be used in an acid-base neutralization if the endpoint of the direct titration were accidentally exceeded. 2. Assuming that the Recommended Daily Allowance (U.S. RDA) of vitamin C is 60 mg, how much of this citrus drink would you have to consume (in mL) each day in order to insure that your body has this recom- mended daily allowance? ES for rstore, LLC ve 702 USA