A mixture of solid calcium oxide, CaO, and solid barium oxide, BaO, weighing 3.145 g is added to a 2.00 L flask containing carbon dioxide, CO2, at 30 ∘C. The CaO and BaO react completely with the carbon dioxide gas to form solid CaCO3 and BaCO3, respectively. Calculate the moles of CO2 consumed by the reaction if the initial pressure of CO2 gas was 0.796 atm and the final pressure of CO2 gas is 0.394 atm. moles of CO2: mol What is the mass percentage of CaO in the solid mixture? mass percent CaO: % What is the mass percentage of BaO in the solid mixture? mass percent BaO:
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.
A mixture of solid calcium oxide, CaO,
and solid barium oxide, BaO,
weighing 3.145 g
is added to a 2.00 L
flask containing carbon dioxide, CO2,
at 30 ∘C.
The CaO
and BaO
react completely with the carbon dioxide gas to form solid CaCO3
and BaCO3,
respectively. Calculate the moles of CO2
consumed by the reaction if the initial pressure of CO2
gas was 0.796 atm
and the final pressure of CO2
gas is 0.394 atm.
moles of CO2:
mol
What is the mass percentage of CaO
in the solid mixture?
mass percent CaO:
%
What is the mass percentage of BaO
in the solid mixture?
mass percent BaO:
%
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