Now suppose a reaction vessel is filled with 4.62 atm of nitrosyl chloride (NOCI) and 0.265 atm of chlorine (Cl₂) at 769. °C. Answer the following questions about this system: Under these conditions, will the pressure of NOCI tend to rise or fall? Is it possible to reverse this tendency by adding NO? In other words, if you said the pressure of NOCI will tend to rise, can that be changed to a tendency to fall by adding NO? Similarly, if you said the pressure of NOCI will tend to fall, can that be changed to a tendency to rise by adding NO? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. Round your answer to 2 significant digits. Ⓒrise fall yes no atm X S
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.
![**Chemical Equilibrium in a Reaction Vessel**
Consider the following equilibrium reaction:
\[ 2NOCl(g) \leftrightharpoons 2NO(g) + Cl_2(g) \ \ \Delta G^\circ = 41 \text{kJ} \]
**Conditions:**
- A reaction vessel contains 4.62 atm of nitrosyl chloride (NOCl) and 0.265 atm of chlorine (Cl_2) at a temperature of 769°C.
**Questions:**
1. **Behavior of NOCl Pressure:**
Under these conditions, will the pressure of NOCl tend to rise or fall?
- [ ] rise
- [ ] fall
2. **Reversibility by Adding NO:**
Is it possible to reverse this tendency by adding NO?
In other words, if you said the pressure of NOCl will tend to rise, can that be changed to a tendency to fall by adding NO? Similarly, if you said the pressure of NOCl will tend to fall, can that be changed to a tendency to rise by adding NO?
- [ ] yes
- [ ] no
3. **Calculation of Minimum Pressure:**
If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. Round your answer to 2 significant digits.
- [ ] ______ atm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4100c518-1a8f-4898-88a2-d0f1a7669694%2F74cbbc23-ed97-4b66-b065-b11dbafe02f8%2F30qnnnd_processed.jpeg&w=3840&q=75)
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