Which of the following techniques would NOT result in a titration error? O a. Rinsing the burette with distilled water prior to filling it up with the titrant. O b. Adding 100mL of distilled water instead of 50mL to the vinegar sample. O c. Titrating duplicate trials of soda samples within a 30-minute interval. O d. Reusing an uncleaned Erlenmeyer flask for the second trial of titration.

Chemistry
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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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Please answer these three multiple type questions. Thank you very much!

 

 

1
Which of the following techniques would NOT result in a titration error?
O a. Rinsing the burette with distilled water prior to filling it up with the titrant.
O b. Adding 100mL of distilled water instead of 50mL to the vinegar sample.
O c. Titrating duplicate trials of soda samples within a 30-minute interval.
O d. Reusing an uncleaned Erlenmeyer flask for the second trial of titration.
2.
Which of the following is/are TRUE about equivalence and end points?
I. The end point of a titration is reached when the titrant and analyte are
stoichiometrically equal.
II. When you are titrating a strong or weak acid with a strong base, the end point will
always be faint pink using a phenolphthalein indicator.
III. When you are titrating a strong or weak acid with a strong base, the volume needed to
reach the end point will always be lower than that of the equivalence point.
O a. Tand III
O b. III only
O c. I, Il and III
O d. Il only
3
Can a tablet be sufficient in neutralizing a 100. mL of stomach acid with a pH of 1.50?
Hint: H* concentration is antilog(-pH).
Answer:
Transcribed Image Text:1 Which of the following techniques would NOT result in a titration error? O a. Rinsing the burette with distilled water prior to filling it up with the titrant. O b. Adding 100mL of distilled water instead of 50mL to the vinegar sample. O c. Titrating duplicate trials of soda samples within a 30-minute interval. O d. Reusing an uncleaned Erlenmeyer flask for the second trial of titration. 2. Which of the following is/are TRUE about equivalence and end points? I. The end point of a titration is reached when the titrant and analyte are stoichiometrically equal. II. When you are titrating a strong or weak acid with a strong base, the end point will always be faint pink using a phenolphthalein indicator. III. When you are titrating a strong or weak acid with a strong base, the volume needed to reach the end point will always be lower than that of the equivalence point. O a. Tand III O b. III only O c. I, Il and III O d. Il only 3 Can a tablet be sufficient in neutralizing a 100. mL of stomach acid with a pH of 1.50? Hint: H* concentration is antilog(-pH). Answer:
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