Answered: Table 1. Titration data Trial 1…

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...

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Table 1. Titration data

	Trial 1	Trial 2	Trial 3
Initial burette reading (mL)	1.48	1.89	1.95
Molarity of NaOH (M)	0.100	0.100	0.100
Volume of vinegar sample (mL)	5.00	5.00	5.00
Final burette reading (mL)	49.32	49.06	49.93

Table 2. Titration data

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Table 2. Titration data

	Trial 1	Trial 2	Trial 3
Initial burette reading (mL)	1.48	1.89	1.95
Molarity of NaOH (M)	0.100	0.100	0.100
Volume of vinegar sample (mL)	5.00	5.00	5.00
Final burette reading (mL)	49.32	49.06	49.93
Expected color at end point	Choose...	Choose...	Choose...
Volume of NaOH used (mL)

1. Average Volume of NaOH used in liters

2. Average moles of NaOH used (mol)

3. Average moles of acetic acid (mol)

4. Average molarity of acetic acid (M)

5. Average mass of acetic acid (g)

6. Average mass of vinegar (g) (assume the density of vinegar is 1.00 g/mL)

7. Average mass % of acetic acid in vinegar

8. Known mass % of acetic acid in vinegar is 5.45%

Percent Error

9. Suppose the concentration of the NaOH solution was 0.5 M instead of 0.1 M. Would this titration have required more, less, or the same amount of NaOH solution for a complete reaction?

10. Suppose you used 0.5 M NaOH to titrate your vinegar sample instead of 0.1 M. What effect does the concentration of base added have on the reliability of the results of your titration?

11. Consider a 0.238 M aqueous solution of sodium hydroxide, NaOH.

a. How many grams of NaOH are dissolved in 23.46 mL?

b. How many individual hydroxide ions (OH⁻) are found in 23.46 mL?

c. How many moles of sulfuric acid, H₂SO₄, are neutralized by 23.46 mL of 0.238 M NaOH(aq)? [Hint: begin by writing a balanced equation for this neutralization reaction.]

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