Page 1 of 1

### Meaning of State Function

Posted: Sun Jan 26, 2020 8:25 pm
What exactly does it mean that Enthalpy is a state function? Does it just mean it is additive and can be combined with multiple steps? Also, can someone give a quick example of this? Thank you!

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 8:27 pm
a state function just means that it's the STATE of the sample, whatever it is, that matters

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 8:58 pm
A state function is a property that does not depend on the path taken. An example of a state function is temperature. For example, a pot of boiling water at 212 F could be boiled for hours or minutes, in a microwave or an oven, etc., it would still be at 212 F. The path taken does not matter. You most likely already know that temperatures can be added, multiplied, etc.

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 9:02 pm
state properties are those that are determined by its current state, independent on the path taken to obtain that state.

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 9:10 pm
A state function is not dependent on the path taken to obtain that state. One example is density which only depends on the initial and final, not the path taken.

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 9:11 pm
State function means it is independent of path taken. Work is an example of NOT a state function, it is dependent on path taken.

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 9:13 pm
Enthalpy is a state function because it does not depend on the path taken, only the initial and final values matter.

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 9:13 pm
In lecture, Lavelle highlighted that a state property (such as enthalpy) is not dependent on the path taken to obtain that state. Some state property examples include E, P, V, T, density, and heat capacity. On the other hand some that are not state peroperties include work (w) and heat (q).

### Re: Meaning of State Function

Posted: Sun Jan 26, 2020 9:14 pm
All you care about is final and initial so enthalpy of product minus enthalpy of reactants