Once upon a time, Tricia and her friend Jillian are doing titration to assess the molarity of the sample's total acid content. Using the pH measurements to report acidity, they were ordered to study a clear aqueous solution of an unknown monoprotic acid. They decided to use two methods of experiments to gather essential data for their Chemistry Class. The first method is through a pH strip. To estimate the pH of the sample, Tricia used a pH strip. Tricia collected 0.001 L of the sample, which came out to have a pH of around 3.3. Furthermore, Tricia made a new setup in which 0.001 L of the same sample was diluted with 0.009 L of water, and the pH taken was now around 3.8. The second method is Titration, and Jillian used this method. Jillian prepared a 0.010 L aliquot of the sample and diluted it with 0.025 L of distilled water. After this, Jillian added 2 drops of phenolphthalein, and it was titrated 0.00354 L of 48 mmol standardized NaOH to the endpoint. With this, answer the following questions. Questions: 1. Using the data in the titration method, compute the molarity of the acid. 2. Predict the pH of the sample, assuming that the titrated unknown is a strong acid. 3. Calculate the [H+] concentration in the sample before dilution using the values from the pH
Once upon a time, Tricia and her friend Jillian are doing titration to assess the molarity of the sample's total acid content. Using the pH measurements to report acidity, they were ordered to study a clear aqueous solution of an unknown monoprotic acid. They decided to use two methods of experiments to gather essential data for their Chemistry Class. The first method is through a pH strip. To estimate the pH of the sample, Tricia used a pH strip. Tricia collected 0.001 L of the sample, which came out to have a pH of around 3.3. Furthermore, Tricia made a new setup in which 0.001 L of the same sample was diluted with 0.009 L of water, and the pH taken was now around 3.8. The second method is Titration, and Jillian used this method. Jillian prepared a 0.010 L aliquot of the sample and diluted it with 0.025 L of distilled water. After this, Jillian added 2 drops of phenolphthalein, and it was titrated 0.00354 L of 48 mmol standardized NaOH to the endpoint. With this, answer the following questions. Questions: 1. Using the data in the titration method, compute the molarity of the acid. 2. Predict the pH of the sample, assuming that the titrated unknown is a strong acid. 3. Calculate the [H+] concentration in the sample before dilution using the values from the pH
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 99AP
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[5.1] Please help me understand this given problem. Thank you!
![Once upon a time, Tricia and her friend Jillian are doing titration to assess the molarity of the
sample's total acid content. Using the pH measurements to report acidity, they were ordered to
study a clear aqueous solution of an unknown monoprotic acid. They decided to use two methods
of experiments to gather essential data for their Chemistry Class.
The first method is through a pH strip. To estimate the pH of the sample, Tricia used a pH strip.
Tricia collected 0.001 L of the sample, which came out to have a pH of around 3.3. Furthermore,
Tricia made a new setup in which 0.001 L of the same sample was diluted with 0.009 L of water,
and the pH taken was now around 3.8.
The second method is Titration, and Jillian used this method. Jillian prepared a 0.010 L aliquot of
the sample and diluted it with 0.025 L of distilled water. After this, Jillian added 2 drops of
phenolphthalein, and it was titrated 0.00354 L of 48 mmol standardized NaOH to the endpoint.
With this, answer the following questions.
Questions:
1. Using the data in the titration method, compute the molarity of the acid.
2. Predict the pH of the sample, assuming that the titrated unknown is a strong acid.
3. Calculate the [H+] concentration in the sample before dilution using the values from the pH
strip method.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc4d67859-3f5b-44f6-9154-50406fb31343%2F6173aace-bafa-4319-b213-2431524d82b4%2Fr1hqwrr_processed.png&w=3840&q=75)
Transcribed Image Text:Once upon a time, Tricia and her friend Jillian are doing titration to assess the molarity of the
sample's total acid content. Using the pH measurements to report acidity, they were ordered to
study a clear aqueous solution of an unknown monoprotic acid. They decided to use two methods
of experiments to gather essential data for their Chemistry Class.
The first method is through a pH strip. To estimate the pH of the sample, Tricia used a pH strip.
Tricia collected 0.001 L of the sample, which came out to have a pH of around 3.3. Furthermore,
Tricia made a new setup in which 0.001 L of the same sample was diluted with 0.009 L of water,
and the pH taken was now around 3.8.
The second method is Titration, and Jillian used this method. Jillian prepared a 0.010 L aliquot of
the sample and diluted it with 0.025 L of distilled water. After this, Jillian added 2 drops of
phenolphthalein, and it was titrated 0.00354 L of 48 mmol standardized NaOH to the endpoint.
With this, answer the following questions.
Questions:
1. Using the data in the titration method, compute the molarity of the acid.
2. Predict the pH of the sample, assuming that the titrated unknown is a strong acid.
3. Calculate the [H+] concentration in the sample before dilution using the values from the pH
strip method.
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