Magnesium metal is reacted with hydrochloric acid to produce hydrogen gas. A sample of hydrogen gas is collected over water in a eudiometer at 28.0 °C. The atmospheric pressure is 786. mmHg. Determine the pressure (in atm) of the hydrogen gas produced. Round your answer to 3 significant digits. Temperature C Water Vapor Pressure (mmHg) 20 Continue 0804 22 24 26 28 30 Pressure= 2 atm Note: Reference the Conversion factors for non-SI units table for additional information. S 3 0.2 17.5 19.8 e 22.4 X 25.2 28.3 31.8 4 S % 5 t 9 A 6 y & 7 h Submit Assign © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center k 8 ( 9 P Ac O
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
![**Educational Content: Determining Gas Pressure**
Magnesium metal is reacted with hydrochloric acid to produce hydrogen gas. A sample of hydrogen gas is collected over water in a eudiometer at 28.0 °C. The atmospheric pressure is 786 mmHg. Determine the pressure (in atm) of the hydrogen gas produced. Round your answer to 3 significant digits.
### Data Table
| Temperature (°C) | Water Vapor Pressure (mmHg) |
|------------------|-----------------------------|
| 20 | 17.5 |
| 22 | 19.8 |
| 24 | 22.4 |
| 26 | 25.2 |
| 28 | 28.3 |
| 30 | 31.8 |
**Note:** Reference the Conversion factors for non-SI units table for additional information.
**Calculation Input:**
- **Pressure:** \[ \_\_\_ \] atm
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**Explanation of Table:**
The table provides water vapor pressures at different temperatures. This data is essential in adjusting the atmospheric pressure to find the pressure of hydrogen gas when collected over water. Subtract the water vapor pressure at 28°C from the total atmospheric pressure to find the hydrogen gas pressure.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9ce1fa32-745b-446a-832b-1aa8581f8e40%2Ffe3e5531-c8aa-4fee-be95-5087ffb3e6c8%2Fxio8si_processed.jpeg&w=3840&q=75)
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