### Collecting Hydrogen Gas Through Water DisplacementA student collected a sample of hydrogen gas by the displacement of water, as shown by the diagram. The relevant data are provided in the following table:#### GAS SAMPLE DATA- **Volume of sample:** 90.0 mL- **Temperature:** 25°C- **Atmospheric Pressure:** 745 mm Hg- **Equilibrium Vapor Pressure of H₂O (25°C):** 23.8 mm Hg### Tasks(a) **Calculate the number of moles of hydrogen gas collected.**(b) **Calculate the number of molecules of water vapor in the sample of gas.**(c) **Calculate the ratio of the average speed of the hydrogen molecules to the average speed of the water vapor molecules in the sample.**(d) **Which of the two gases, H₂ or H₂O, deviates more from ideal behavior? Explain your answer.**

Given: Temperature=25 °C =298.15 kVolume= 90.0 mLAtmoespheric pressure= 745 mmHg

A student collected a sample of hydrogen gas by the displacement of water as shown by the diagram above. The relevant data are given in the following table. GAS SAMPLE DATA Volume of sample Temperature Atmospheric Pressure Equilibrium Vapor Pressure of H₂O (25°C) 90.0 mL 25°C 745 mm Hg 23.8 mm Hg (a) Calculate the number of moles of hydrogen gas collected. (b) Calculate the number of molecules of water vapor in the sample of gas. (c) Calculate the ratio of the average speed of the hydrogen molecules to the average speed of the water vapor molecules in the sample. (d) Which of the two gases, H₂ or H₂O, deviates more from ideal behavior? Explain your answer.

A student collected a sample of hydrogen gas by the displacement of water as shown by the diagram above. The relevant data are given in the following table. GAS SAMPLE DATA Volume of sample Temperature Atmospheric Pressure Equilibrium Vapor Pressure of H₂O (25°C) 90.0 mL 25°C 745 mm Hg 23.8 mm Hg (a) Calculate the number of moles of hydrogen gas collected. (b) Calculate the number of molecules of water vapor in the sample of gas. (c) Calculate the ratio of the average speed of the hydrogen molecules to the average speed of the water vapor molecules in the sample. (d) Which of the two gases, H₂ or H₂O, deviates more from ideal behavior? Explain your answer.

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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Question

### Collecting Hydrogen Gas Through Water Displacement

A student collected a sample of hydrogen gas by the displacement of water, as shown by the diagram. The relevant data are provided in the following table:

#### GAS SAMPLE DATA
- **Volume of sample:** 90.0 mL
- **Temperature:** 25°C
- **Atmospheric Pressure:** 745 mm Hg
- **Equilibrium Vapor Pressure of H₂O (25°C):** 23.8 mm Hg

### Tasks
(a) **Calculate the number of moles of hydrogen gas collected.**

(b) **Calculate the number of molecules of water vapor in the sample of gas.**

(c) **Calculate the ratio of the average speed of the hydrogen molecules to the average speed of the water vapor molecules in the sample.**

(d) **Which of the two gases, H₂ or H₂O, deviates more from ideal behavior? Explain your answer.**

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