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Does an increase in pressure at constant temperature increase the rate constant of a reversible reaction in both directions?
MSaad
The rate constant is unaffected, as demonstrated by Arrhenius equation:
k = Ae^(-E/RT)
where
A is the pre-exponential factor (constant for a particular reaction)
E is the activation energy
R is the molar gas constant
T is the thermodynamic temperature
However, when pressure is increased at constant temperature for a gaseous reversible reaction, the concentrations of every reactant and product increase by the SAME factor. Since Kp (pressure equilibrium constant) is to remain constant, it means that the position of equilibrium will shift in such a way so as to decrease the total number of moles of gaseous species.
Note:
This answer can be improved by proving the last statement using a general example which, due to lack of time, I skipped. (Although some people might get the logic!!!)
Wiki User
∙ 13y ago
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Is isothermal expansion reversible under ideal conditions?
Yes, isothermal expansion is considered reversible under ideal conditions because it occurs at a constant temperature, resulting in no change in entropy. This means that the process can be reversed with the same work input, making it reversible.
When does raising the temperature of a gas increase its preasure?
This is the Gay-Lussac law: at constant volume of a gas the temperature increase when the pressure increase.
Explain the Difference between adiabatic and isothermal compression?
"Adiabatic process" refers to processes that take place in a closed system with no heat interaction with it's surroundings. "Isentropic process" refers to processes that take place in a closed system with no heat interaction with the surroundings (adiabatic process) and internally reversible. This is, no internal generation of entropy, entropy stays constant, which is what is meant by "isentropic". We can also say, an isentropic process is one where entropy stays constant, and no heat interaction of the system with the surroundings takes place (adiabatic process). Or, an adiabatic process can be irreversible, or reversible (isentropic).
What happens to the temperature increase the number of particles what happens to the pressure?
Increasing the temperature the number of particles remain constant and the pressure increase.
What will happen if a gas is held at constant temperature has an increase in pressure applied to it?
The volume of the gas will decrease. the gas will also attempt to increase in temperature.
Is isothermal expansion reversible under ideal conditions?
Yes, isothermal expansion is considered reversible under ideal conditions because it occurs at a constant temperature, resulting in no change in entropy. This means that the process can be reversed with the same work input, making it reversible.
When does raising the temperature of a gas increase its preasure?
This is the Gay-Lussac law: at constant volume of a gas the temperature increase when the pressure increase.
In GC isothermal is when the temperature is constant but what is it called when the temperature is programmed to increase?
Programmed temperature.
When the temperature of a gas is constant will the volume increase or decrease as the pressure decreases?
When the temperature of a gas is constant and the pressure decreases, the volume will increase. This is described by Boyle's Law, which states that at constant temperature, the pressure and volume of a gas are inversely proportional to each other.
How will volume of a balloon change if pressure remains constant but temperature increases?
The volume will increase in proportion to the increase in absolute temperature.
Explain the Difference between adiabatic and isothermal compression?
"Adiabatic process" refers to processes that take place in a closed system with no heat interaction with it's surroundings. "Isentropic process" refers to processes that take place in a closed system with no heat interaction with the surroundings (adiabatic process) and internally reversible. This is, no internal generation of entropy, entropy stays constant, which is what is meant by "isentropic". We can also say, an isentropic process is one where entropy stays constant, and no heat interaction of the system with the surroundings takes place (adiabatic process). Or, an adiabatic process can be irreversible, or reversible (isentropic).
What happens to the temperature increase the number of particles what happens to the pressure?
Increasing the temperature the number of particles remain constant and the pressure increase.
What is the temperature if the gas pressure is constant?
At isobaric (pressure) expansion (volume increase) the temperature will increase because V is proportional to T for the same amount of gas (closed container) at constant pressure.
If the temperature of a reaction increases what happens to the value of the equilibruim constant?
If the temperature of a reaction increases, the value of the equilibrium constant can either increase or decrease depending on whether the reaction is endothermic or exothermic. For an endothermic reaction, the equilibrium constant will increase with temperature, while for an exothermic reaction, the equilibrium constant will decrease with temperature.
Which of these is reversible heating burning or neither?
Burning is not reversible because it involves a chemical reaction that permanently changes the substances involved. Heating, on the other hand, is reversible since it involves providing energy to increase the temperature but can be reversed by removing the heat.
How does volume of matter change with increase in temperature?
Assuming that pressure and the amount of matter are constant (meaning they do not change), volume will increase as temperature increases.
What will happen if a gas is held at a constant temperature has a increase in pressure applied to it?
The volume of the gas will decrease. the gas will also attempt to increase in temperature.
