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Why work and heat transfer are not property of the system?
irstly from Thermodynamics point of view, we need to call heat as Heat transfer. Both Heat and work transfer are energies in transit. They come into picture only when a process is taking place. Also the quantity of heat transfer depends on the type of process or path followed. So Heat Transfer is a path function but not a property(which is a point function). 📷 In case of properties, the difference in properties (here P2-P1 or V2- V1)between state 1 and state 2 always remains same irrespective of the path followed. So properties are called Exact Differentials or Point functions. But in case of Heat transfer and Work transfer, the quantity of heat and work transfer between state 1 and state 2 depends on the path followed. Therefore heat and work transfer are not exact differentials,they are Inexact differentials or path functions.
What does Hess's law say about the enthalpy of a reaction?
The enthalpy of a reaction does not depend on the reactant path taken.
Where does the heat that warms endothermic animals come from?
For endothermic creatures, heat is an extra product of natural metabolism. On the flipside, exothermic creatures actually depend on heat from other sources (usually the sun) to do any of those metabolic processes.
Why does an object move faster on a straight path than a curved path?
With a curved path you have to slow down to curve as with a straight path you dont have to slow down you can do as fast as you need to go to get threw it.
Does aluminum foil cool a soda faster?
Aluminium foil would cool the soda faster. However it would depend on what you are comparing with, the material surrounding the soda at the start. It would also depend on the surrounding temperature. Heat would move from regions of higher temperature to regions of lower temperature, hence the colder the surroundings the faster the rate of heat transfer. Most metals are good conductors of heat as they have a mobile sea of delocalised electrons which can allow heat to be conducted away from the soda. However, on the other hand you would have to consider the heat capacity of the aluminium as well. The aluminium would carry heat by itself already and hence might affect the final temperature of the soda if it is kept in a small area without anything to remove the heat. However the amount of heat possessed by the aluminium foil can also be considered negligible if a small mass is used as the specific heat capacity of aluminium is only 910J/kgK. The surface are of the aluminium foil and how it is in contact with the soda also plays a important factor, as a larger surface area to volume ratio would facilitate better rate of heat transfer. Please correct this if this is wrong.
Are heat and work path functions?
No, heat and work are not path functions. Heat and work are energy interactions between a system and its surroundings that depend on the process taken, not just the initial and final states. Path functions are properties whose values depend on the path followed to reach that state, such as change in temperature.
Why heat and work are path function prove?
Heat and work are path functions because they depend on the specific path taken during a thermodynamic process. The amount of heat transferred or work done can vary depending on the specific conditions and intermediate states encountered during the process. This is in contrast to state functions, such as internal energy and enthalpy, which only depend on the initial and final states of the system and are independent of the path taken. Mathematically, path functions are represented as integrals, reflecting the dependence on the specific path followed.
What are state functions in thermodynamics and how do they differ from path functions?
State functions in thermodynamics are properties that depend only on the current state of a system, such as temperature, pressure, and internal energy. They do not depend on the path taken to reach that state. Path functions, on the other hand, depend on the specific path taken to reach a particular state, such as work and heat.
What are some examples of state functions and how do they differ from other types of functions?
State functions are properties that depend only on the current state of a system, such as temperature, pressure, and volume. They do not depend on the path taken to reach that state. In contrast, non-state functions, like work and heat, depend on the process or path taken to reach a particular state.
What does the amount of heat depend on?
heat capacity
What is difference between path function and point function in thermodyanaMICS?
Path function: Their magnitudes depend on the path followed during a process as well as the end states. Work (W), heat (Q) are path functions.The cyclic integral of a path function is non-zero. work and heat are path functions.Point Function: They depend on the state only, and not on how a system reaches that state. All properties are point functions.The cyclic integral of a point function is zero. properties are point functions, (ie pressure,volume,temperature and entropy).
Does the work done on an object by a conservative force depend on the path taken by the object?
No, the work done on an object by a conservative force does not depend on the path taken by the object.
How is heat capacity a path function?
Well, honey, heat capacity is a path function because it depends on the specific process or path taken to reach a certain state. It's all about how much heat is needed to change the temperature of a substance, and that can vary depending on the route you take. So, in a nutshell, heat capacity doesn't give a damn about the destination, it's all about the journey.
What is Hesses law?
the enthalpy of a reaction does not depend on the path
What does the amount of heat energy depend on?
heat capacity
What is the difference between path function and state function?
state function did not depend on the path , it depends on the initial and final point of the system where as path function depends on the path of the reaction.
How do you depend on the heat and light from the sun?
Totally.
