Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Molar mass homework... thanks!
![**Problem Statement:**
A 0.485 g sample of a monoprotic acid is dissolved in water and titrated with 0.270 M KOH. What is the molar mass of the acid if 13.0 mL of the KOH solution is required to neutralize the sample?
**Calculation Section:**
Molar mass: [______] g/mol
**Explanation:**
In this problem, you are given a 0.485 g sample of a monoprotic (one H+ ion) acid. You need to determine the molar mass of the acid based on titration data with a potassium hydroxide (KOH) solution. The KOH solution has a concentration of 0.270 M, and 13.0 mL of it is required to neutralize the acid sample.
- Use stoichiometry and the concept of molarity to find the moles of KOH used.
- Determine the moles of acid, knowing that it's monoprotic and fully reacts with KOH.
- Calculate the molar mass using the mass of the acid sample and the moles of acid.
This kind of problem is common in acid-base titration experiments to find unknown molar mass or concentration values.](https://content.bartleby.com/qna-images/question/c6ae9165-8c64-40e9-9a68-65bc31ca98b7/e686e2fb-51b5-49b9-bcbf-29b347e94f77/oa2gmbk_processed.png)
Transcribed Image Text:**Problem Statement:**
A 0.485 g sample of a monoprotic acid is dissolved in water and titrated with 0.270 M KOH. What is the molar mass of the acid if 13.0 mL of the KOH solution is required to neutralize the sample?
**Calculation Section:**
Molar mass: [______] g/mol
**Explanation:**
In this problem, you are given a 0.485 g sample of a monoprotic (one H+ ion) acid. You need to determine the molar mass of the acid based on titration data with a potassium hydroxide (KOH) solution. The KOH solution has a concentration of 0.270 M, and 13.0 mL of it is required to neutralize the acid sample.
- Use stoichiometry and the concept of molarity to find the moles of KOH used.
- Determine the moles of acid, knowing that it's monoprotic and fully reacts with KOH.
- Calculate the molar mass using the mass of the acid sample and the moles of acid.
This kind of problem is common in acid-base titration experiments to find unknown molar mass or concentration values.
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