e Choice of the numbered items or incomplete statements is followed by answers or by completions of the statement. the one lettered answer or completion that is best in each case. Write your answer before each number. 75.Assay of aspirin via titrimetric analysis is what type of chemical reaction a. Oxidation-Reduction C. Precipitation Neutralization b. Complexation d. 76.Type of alkaloidal assay where the total alkaloids are determined: a. Proximate C. Chromatographic b. Ultimate d. Spectrophotometric 77.In the assay of Boric acid, Boric acid behaves as very weak a. C. tetrabasic acid tribasic acid b. dibasic acid d. monobasic acid

e Choice of the numbered items or incomplete statements is followed by answers or by completions of the statement. the one lettered answer or completion that is best in each case. Write your answer before each number. 75.Assay of aspirin via titrimetric analysis is what type of chemical reaction a. Oxidation-Reduction C. Precipitation Neutralization b. Complexation d. 76.Type of alkaloidal assay where the total alkaloids are determined: a. Proximate C. Chromatographic b. Ultimate d. Spectrophotometric 77.In the assay of Boric acid, Boric acid behaves as very weak a. C. tetrabasic acid tribasic acid b. dibasic acid d. monobasic acid

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

12.0 mL of a sodium hydroxide solution of unknown concentration was titrated with 16.1 mL of 0.209 M sulfuric acid solution. What is the concentration (M) of this unknown sodium hydroxide solution? a.0.140 b.80.8 c.3.21 d.0.561 e.0.280
To form a buffer solution with 100 ml of . 5M sodium acetate solution, one could add: A. 50mL of 0.5 M NaOH solution B. 50mL of .5M HCl solution C. 100 mL of .5M HCl solution D. 100 mL of .5M NaOH solution E. 100 mL of .5M NaCl solution
Activity coefficients become more important I. with smaller ions II. with larger ion charges III. at higher ionic strengths a. I only b. II only c. III only d. II & III e. I, II, & III
Chemistry What is the equilibrium concentration of hydroxyl ions present in a solution of HClO4 whose analytical concentration is 1.9 M? a. 2.33 b. 3.38 c. 2.38
The controlled addition of a liquid into a vessel to measure the volume that reacts with a substance already in the vessel is called: a. concentration b. hydration c. titration d. dilution
39.Which of the following best describes a titration? A. A known amount of one reactant is used to determine the amount of another reactant. B. Combining two reactants to form a product and measuring the amount of that product against the theoretical yield. C. A known amount of both products is used to determine the amount of reactant. D. A known amount of one product is used to determine the amount of another product. E. A known amount of one reactant is used to determine the amount of product formed.
28. A certain vegetable dye is pink in acidic solutions, green in neutral solutions, and blue in basic conditions. In which solution(s) will the dye be green in color? A. NaOH solution B. HCI solution C. Lemon Juice D. Salt water E. Distilled water
1. Obtain a 50-mL burette, 5-mL volumetric pipette and a pipette bulb from the stockroom. Setting up the burette and preparing the NaOH 2. Rinse the inside of the burette with distilled water. Allow the distilled water to drain out through the tip in order to ensure that the tip is also rinsed. 3. Now rinse the burette with a small amount of NaOH (aq). To do this, add about 5-mL of NaOH (aq) to the burette, then twirl the burette on its side (over the sink) to rinse its entire inner surface. Then allow the NaOH (aq) to drain out through the tip. www Burette Pipette 4. Fill the burette with NaOH (aq) up to the top, between 0-mL and 5-mL. Use a funnel to do this carefully, below eye-level, and preferably over the sink. After this you will need to flush the tip of the burette - your instructor will show you how to do this. Now measure the volume at the level of the NaOH precisely, and record it as the "Initial Burette Reading" on your report. Also record the exact molarity of the NaOH…
What is the mole-to-mole ratio between the two reactants? Select one: a. 2 mole CaCO3 to 3 mole NaCl b. 1 mole CaCO3 to 1 mole NaCl c. 1 mole Na2CO3 to 1 mole CaCl2 d. 1 mole CaCl2 to 1 mole Na2CO3 e. 2 mole Na2CO3 to 1 mole CaCO3
If we added AgNO3 to a sample containing KI. The chemical change observed in the test is Select one: a. Heat transfer b. White precipitate formation c. Yellow precipitate formation d. Color change
Peppermint essential oil has been a classic choice for the treatment of ________ for hundreds of years. Choose one answer. a. moles b. incontinence c. measles d. nausea
In terms of safety, organic solvents can always go into the organic waste container directly, the pH they may have does not matter because they are organic a. True b. False