To determine each of the following, what information from a titration curve would you use? Each answer choice can be used more than once or not at all. The appropriate indicator [ Choose ] The identity of the unknown [ Choose ] The concentration of the [ Choose ] unknown Whether the unknown is [ Choose ] strong or weak Whether to use a strong acid [Choose] or a strong base as the titrant

To determine each of the following, what information from a titration curve would you use? Each answer choice can be used more than once or not at all. The appropriate indicator [ Choose ] The identity of the unknown [ Choose ] The concentration of the [ Choose ] unknown Whether the unknown is [ Choose ] strong or weak Whether to use a strong acid [Choose] or a strong base as the titrant

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter4: Polar Bonds, Polar Reactions

Section: Chapter Questions

Problem 15E: Mark each of the following statements True or False: a. The conjugate base of a strong acid is...

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The following four diagrams represent aqueous solutions containing a weak acid (HA) and/or its conjugate base (A). Which of the four solutions is a buffer solution? There may be more than one correct answer.
For oxyacids, how does acid strength depend on a. the strength of the bond to the acidic hydrogen atom? b. the electronegativity of the element bonded to the oxygen atom that bears the acidic hydrogen? c. the number of oxygen atoms? How does the strength of a conjugate base depend on these factors? What type of solution forms when a nonmetal oxide dissolves in water? Give an example of such an oxide. What type of solution forms when a metal oxide dissolves in water? Give an example of such an oxide.
A solution has a pH of 4.5. What would be the color of the solution if each of the following indicators were added? (See Fig. 14-8.) a. methyl orange b. alizarin c. bromcresol green d. phenolphthalein
A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to bring the volume to 500.0 mL of solution. (a) Calculate the pH and pOH in the final solution. (b) Why would we wait for it to return to room temperature? (c) If the mass of the water used to initially dissolve the sodium hydroxide were exactly 450 g and the temperature of the water increased by 8.865 C, how much heat was given off by the dissolution of 15.0 g of solute? Assume the specific heat of the solution is 4.184 J/g. K. What is the molar heat change for the dissolution of sodium hydroxide (known as the enthalpy of solution, Hsol)?
Each box represents an acid solution at equilibrium. Squares represent H+ ions, and circles represent the anion. Water molecules are not shown. Which figure represents a strong acid? Which figure is a weak acid?
Mark each of the following statements True or False: a. The conjugate base of a strong acid is always a weak base. b. The conjugate acid of a strong base is always a weak acid. c. The stronger the acid, the weaker its conjugate base, and vice versa.
Explain why an acid-base indicator changes color over a range of pH values rather than at a specific pH.
How do the components of a conjugate acid—base pair differ from one another4? Give an example of a conjugate acid—base pair to illustrate your answer.