Given You are heating potassium perchlorate and collecting the oxygen gas from the decomposition over water. Write equation. 2 KClO3(s) ----------> 2KCl (s) + 3O2 (g) Mass of sample: 0.398 g Ambient pressure: 752.3 mmHg Volume of gas: 81.4 mL Room temperature: 18.9 degrees Celsius Using the mass of your KClO4 sample, and the balanced equation, calculate the theoretical yield of O2 gas in grams. The theoretical yield of O2 gas is 0.155 g. 1. Using the equation from the graph posted on Moodle with vapor pressure of water versus temperature, find the vapor pressure of water at your temperature: 18.9 degrees celsius (i think this is right.) Vapor pressure of water at given temperature: 2. Now using your total pressure, and the vapor pressure of water at your temperature, find the pressure of O2 gas in your sample, in atm. 3. How many moles of O2 gas were actually produced? (Assume ideal behavior of the gas).
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.
Given
You are heating potassium perchlorate and collecting the oxygen gas from the decomposition over water. Write equation.
2 KClO3(s) ----------> 2KCl (s) + 3O2 (g)
Mass of sample: 0.398 g
Ambient pressure: 752.3 mmHg
Volume of gas: 81.4 mL
Room temperature: 18.9 degrees Celsius
Using the mass of your KClO4 sample, and the balanced equation, calculate the theoretical yield of O2 gas in grams.
The theoretical yield of O2 gas is 0.155 g.
1.
Using the equation from the graph posted on Moodle with vapor pressure of water versus temperature, find the
vapor pressure of water at your temperature: 18.9 degrees celsius (i think this is right.)
Vapor pressure of water at given temperature:
2.
Now using your total pressure, and the vapor pressure of water at your temperature, find the pressure of O2 gas in your sample, in atm.
3.
How many moles of O2 gas were actually produced? (Assume ideal behavior of the gas).
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